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Finding the Fourth Proportional to 862,672.60, 1,294,008.90 and 231,650.20

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Solution

The fourth proportional to 862,672.60, 1,294,008.90 and 231,650.20 is: 347,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,672.60 : 1,294,008.90 = 231,650.20 : x
  2. Step 2: Convert to fraction form
    862,672.60/1,294,008.90 = 231,650.20/x
  3. Step 3: Cross multiply
    862,672.60x = 1,294,008.90 × 231,650.20
  4. Step 4: Simplify right side
    862,672.60x = 299,757,420,486.78
  5. Step 5: Solve for x
    x = 299,757,420,486.78/862,672.60
  6. Step 6: Final answer
    x = 347,475.30

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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.