Finding the Fourth Proportional to 478,747,971.14, 718,062,520.12 and 129,021,398.94
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Solution
The fourth proportional to 478,747,971.14, 718,062,520.12 and 129,021,398.94 is: 193,516,080.40
Step by Step Solution
- Step 1: Write the proportion equation
478,747,971.14 : 718,062,520.12 = 129,021,398.94 : x - Step 2: Convert to fraction form
478,747,971.14/718,062,520.12 = 129,021,398.94/x - Step 3: Cross multiply
478,747,971.14x = 718,062,520.12 × 129,021,398.94 - Step 4: Simplify right side
478,747,971.14x = 92,645,430,872,264,288 - Step 5: Solve for x
x = 92,645,430,872,264,288/478,747,971.14 - Step 6: Final answer
x = 193,516,080.40
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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.