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Finding the Fourth Proportional to 521,646.60, 782,469.90 and 433,073.10

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Solution

The fourth proportional to 521,646.60, 782,469.90 and 433,073.10 is: 649,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,646.60 : 782,469.90 = 433,073.10 : x
  2. Step 2: Convert to fraction form
    521,646.60/782,469.90 = 433,073.10/x
  3. Step 3: Cross multiply
    521,646.60x = 782,469.90 × 433,073.10
  4. Step 4: Simplify right side
    521,646.60x = 338,866,665,249.69
  5. Step 5: Solve for x
    x = 338,866,665,249.69/521,646.60
  6. Step 6: Final answer
    x = 649,609.65

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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.