Finding the Fourth Proportional to 656,497.20, 985,134.60 and 478,556.40
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Solution
The fourth proportional to 656,497.20, 985,134.60 and 478,556.40 is: 718,118.02
Step by Step Solution
- Step 1: Write the proportion equation
656,497.20 : 985,134.60 = 478,556.40 : x - Step 2: Convert to fraction form
656,497.20/985,134.60 = 478,556.40/x - Step 3: Cross multiply
656,497.20x = 985,134.60 × 478,556.40 - Step 4: Simplify right side
656,497.20x = 471,442,467,691.44 - Step 5: Solve for x
x = 471,442,467,691.44/656,497.20 - Step 6: Final answer
x = 718,118.02
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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.