Calculating Total Speakers of Most Widely Spoken Languages

The question asks for the total number of speakers of the seven most widely spoken languages, including both first-language and second-language speakers. We need to use the information provided in the table and the text description.

Analyzing the Provided Data

The table gives the number of first-language speakers for the seven specified languages in millions:

The text also states the following:

• 3/7 of the world's population speaks these seven most widely spoken languages as a first language.
• An additional 1.7 billion people speak one of these seven languages as a second language.

Step-by-Step Calculation of Total Speakers

First, let's calculate the total number of first-language speakers for the seven most widely spoken languages by summing the numbers from the table.

Total First-Language Speakers = Sum of speakers for English, Chinese, Spanish, Russian, French, Portuguese, and Arabic.

Total First-Language Speakers = $(1386 + 1000 + 280 + 270 + 220 + 160 + 140) \text{ million}$

Total First-Language Speakers = $(3456) \text{ million}$

To work with the second-language speaker number, which is given in billions, let's convert the total first-language speakers from millions to billions. Recall that 1 billion = 1000 million.

Total First-Language Speakers = $\frac{3456}{1000} \text{ billion} = 3.456 \text{ billion}$

Next, we are told that a further 1.7 billion people speak one of these seven languages as a second language.

Total Speakers (First + Second Language) = Total First-Language Speakers + Total Second-Language Speakers

Total Speakers = $3.456 \text{ billion} + 1.7 \text{ billion}$

Total Speakers = $5.156 \text{ billion}$

Conclusion

Based on the provided data, the total number of speakers of the seven most widely spoken languages, including both first and second language speakers, is 5.156 billion.

Revision Table: Key Calculations

Additional Information on Language Statistics

Understanding language statistics involves looking at both the number of native (first-language) speakers and non-native (second-language) speakers. While a language might have fewer native speakers, a large number of second-language speakers can make it very influential globally, as is the case with English. The data presented here focuses on the seven most widely spoken languages by first-language count from the table, but the question broadens it to include second-language speakers for this specific set of languages.

The provided text also touches on language endangerment, noting that a significant percentage of the world's 3800 known languages are expected to die out over the coming decades. This highlights the vast diversity of languages beyond the most dominant ones and the importance of language preservation efforts.