Use scientific notation to compare these numbers: 3,478,660; 34,870,000; and 34,786,600. Which number has the greatest value?
A:34,870,000
B:3.47866×10^6
C:3.47866×10^7
D:3.487×10^7
To compare the numbers using scientific notation, we need to express them in the same form.
3,478,660 is written as 3.47866×10^6 in scientific notation.
34,870,000 is already in the form of 3.487×10^7.
34,786,600 can be written as 3.47866×10^7.
Comparing the exponents, we can see that 10^7 is greater than 10^6.
Therefore, the number in scientific notation with the greatest value is 3.47866×10^7, which corresponds to option D.