What is 31 percent of 2800000000000 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 2800000000000 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 2800000000000 is 100%, so we can write it down as 2800000000000=100%.
4. We know, that x is 31% of the output value, so we can write it down as x=31%.
5. Now we have two simple equations:
1) 2800000000000=100%
2) x=31%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
2800000000000/x=100%/31%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 31% of 2800000000000

2800000000000/x=100/31
(2800000000000/x)*x=(100/31)*x       - we multiply both sides of the equation by x
2800000000000=3.2258064516129*x       - we divide both sides of the equation by (3.2258064516129) to get x
2800000000000/3.2258064516129=x
868000000000=x
x=868000000000

now we have:
31% of 2800000000000=868000000000