Finding the Fourth Proportional to 638,597,134.04, 881,057,691.35 and 356,293,804.95
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Solution
The fourth proportional to 638,597,134.04, 881,057,691.35 and 356,293,804.95 is: 491,570,319.53
Step by Step Solution
- Step 1: Write the proportion equation
638,597,134.04 : 881,057,691.35 = 356,293,804.95 : x - Step 2: Convert to fraction form
638,597,134.04/881,057,691.35 = 356,293,804.95/x - Step 3: Cross multiply
638,597,134.04x = 881,057,691.35 × 356,293,804.95 - Step 4: Simplify right side
638,597,134.04x = 313,915,397,231,105,280 - Step 5: Solve for x
x = 313,915,397,231,105,280/638,597,134.04 - Step 6: Final answer
x = 491,570,319.53
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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.