Finding the Fourth Proportional to 915,936,736.98, 1,370,438,187.75 and 542,645,113.62
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Solution
The fourth proportional to 915,936,736.98, 1,370,438,187.75 and 542,645,113.62 is: 811,913,701.11
Step by Step Solution
- Step 1: Write the proportion equation
915,936,736.98 : 1,370,438,187.75 = 542,645,113.62 : x - Step 2: Convert to fraction form
915,936,736.98/1,370,438,187.75 = 542,645,113.62/x - Step 3: Cross multiply
915,936,736.98x = 1,370,438,187.75 × 542,645,113.62 - Step 4: Simplify right side
915,936,736.98x = 743,661,586,100,785,664 - Step 5: Solve for x
x = 743,661,586,100,785,664/915,936,736.98 - Step 6: Final answer
x = 811,913,701.11
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.