Finding the Fourth Proportional to 527,794.10, 791,691.15 and 128,431.70
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Solution
The fourth proportional to 527,794.10, 791,691.15 and 128,431.70 is: 192,647.55
Step by Step Solution
- Step 1: Write the proportion equation
527,794.10 : 791,691.15 = 128,431.70 : x - Step 2: Convert to fraction form
527,794.10/791,691.15 = 128,431.70/x - Step 3: Cross multiply
527,794.10x = 791,691.15 × 128,431.70 - Step 4: Simplify right side
527,794.10x = 101,678,240,269.46 - Step 5: Solve for x
x = 101,678,240,269.46/527,794.10 - Step 6: Final answer
x = 192,647.55
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.