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Finding the Fourth Proportional to 493,387.40, 740,081.10 and 488,721.80

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Solution

The fourth proportional to 493,387.40, 740,081.10 and 488,721.80 is: 733,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,387.40 : 740,081.10 = 488,721.80 : x
  2. Step 2: Convert to fraction form
    493,387.40/740,081.10 = 488,721.80/x
  3. Step 3: Cross multiply
    493,387.40x = 740,081.10 × 488,721.80
  4. Step 4: Simplify right side
    493,387.40x = 361,693,767,337.98
  5. Step 5: Solve for x
    x = 361,693,767,337.98/493,387.40
  6. Step 6: Final answer
    x = 733,082.70

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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.