Finding the Fourth Proportional to 721,937.52, 996,261.84 and 399,640.80
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Solution
The fourth proportional to 721,937.52, 996,261.84 and 399,640.80 is: 551,497.70
Step by Step Solution
- Step 1: Write the proportion equation
721,937.52 : 996,261.84 = 399,640.80 : x - Step 2: Convert to fraction form
721,937.52/996,261.84 = 399,640.80/x - Step 3: Cross multiply
721,937.52x = 996,261.84 × 399,640.80 - Step 4: Simplify right side
721,937.52x = 398,146,878,747.07 - Step 5: Solve for x
x = 398,146,878,747.07/721,937.52 - Step 6: Final answer
x = 551,497.70
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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.