28 is what percent of 1290000 - 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 1290000 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 100% equals 1290000, so we can write it down as 100%=1290000.
4. We know, that x% equals 28 of the output value, so we can write it down as x%=28.
5. Now we have two simple equations:
1) 100%=1290000
2) x%=28
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:
100%/x%=1290000/28
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 28 is what percent of 1290000

100%/x%=1290000/28
(100/x)*x=(1290000/28)*x       - we multiply both sides of the equation by x
100=46071.428571429*x       - we divide both sides of the equation by (46071.428571429) to get x
100/46071.428571429=x
0.0021705426356589=x
x=0.0021705426356589

now we have:
28 is 0.0021705426356589% of 1290000