Finding the Fourth Proportional to 478,747,970.13, 718,062,518.61 and 129,021,397.93
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Solution
The fourth proportional to 478,747,970.13, 718,062,518.61 and 129,021,397.93 is: 193,516,078.88
Step by Step Solution
- Step 1: Write the proportion equation
478,747,970.13 : 718,062,518.61 = 129,021,397.93 : x - Step 2: Convert to fraction form
478,747,970.13/718,062,518.61 = 129,021,397.93/x - Step 3: Cross multiply
478,747,970.13x = 718,062,518.61 × 129,021,397.93 - Step 4: Simplify right side
478,747,970.13x = 92,645,429,952,521,392 - Step 5: Solve for x
x = 92,645,429,952,521,392/478,747,970.13 - Step 6: Final answer
x = 193,516,078.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.