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Finding the Fourth Proportional to 659,062.60, 988,593.90 and 389,624.20

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Solution

The fourth proportional to 659,062.60, 988,593.90 and 389,624.20 is: 584,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,062.60 : 988,593.90 = 389,624.20 : x
  2. Step 2: Convert to fraction form
    659,062.60/988,593.90 = 389,624.20/x
  3. Step 3: Cross multiply
    659,062.60x = 988,593.90 × 389,624.20
  4. Step 4: Simplify right side
    659,062.60x = 385,180,107,412.38
  5. Step 5: Solve for x
    x = 385,180,107,412.38/659,062.60
  6. Step 6: Final answer
    x = 584,436.30

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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.