Finding the Fourth Proportional to 921,753,691.53, 1,272,118,671.74 and 564,758,387.06
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Solution
The fourth proportional to 921,753,691.53, 1,272,118,671.74 and 564,758,387.06 is: 779,426,972.51
Step by Step Solution
- Step 1: Write the proportion equation
921,753,691.53 : 1,272,118,671.74 = 564,758,387.06 : x - Step 2: Convert to fraction form
921,753,691.53/1,272,118,671.74 = 564,758,387.06/x - Step 3: Cross multiply
921,753,691.53x = 1,272,118,671.74 × 564,758,387.06 - Step 4: Simplify right side
921,753,691.53x = 718,439,689,191,607,552 - Step 5: Solve for x
x = 718,439,689,191,607,552/921,753,691.53 - Step 6: Final answer
x = 779,426,972.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.