Finding the Fourth Proportional to 723,455.69, 998,387.18 and 396,781.70
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Solution
The fourth proportional to 723,455.69, 998,387.18 and 396,781.70 is: 547,568.80
Step by Step Solution
- Step 1: Write the proportion equation
723,455.69 : 998,387.18 = 396,781.70 : x - Step 2: Convert to fraction form
723,455.69/998,387.18 = 396,781.70/x - Step 3: Cross multiply
723,455.69x = 998,387.18 × 396,781.70 - Step 4: Simplify right side
723,455.69x = 396,141,762,538.61 - Step 5: Solve for x
x = 396,141,762,538.61/723,455.69 - Step 6: Final answer
x = 547,568.80
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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.