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Finding the Fourth Proportional to 508,905.60, 763,358.40 and 458,167.20

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Solution

The fourth proportional to 508,905.60, 763,358.40 and 458,167.20 is: 687,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,905.60 : 763,358.40 = 458,167.20 : x
  2. Step 2: Convert to fraction form
    508,905.60/763,358.40 = 458,167.20/x
  3. Step 3: Cross multiply
    508,905.60x = 763,358.40 × 458,167.20
  4. Step 4: Simplify right side
    508,905.60x = 349,745,780,724.48
  5. Step 5: Solve for x
    x = 349,745,780,724.48/508,905.60
  6. Step 6: Final answer
    x = 687,250.80

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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.