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Finding the Fourth Proportional to 498,979.40, 748,469.10 and 460,488.20

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Solution

The fourth proportional to 498,979.40, 748,469.10 and 460,488.20 is: 690,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,979.40 : 748,469.10 = 460,488.20 : x
  2. Step 2: Convert to fraction form
    498,979.40/748,469.10 = 460,488.20/x
  3. Step 3: Cross multiply
    498,979.40x = 748,469.10 × 460,488.20
  4. Step 4: Simplify right side
    498,979.40x = 344,661,188,614.62
  5. Step 5: Solve for x
    x = 344,661,188,614.62/498,979.40
  6. Step 6: Final answer
    x = 690,732.30

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Double scale
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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.