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Finding the Fourth Proportional to 508,082.90, 762,124.35 and 425,414.30

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Solution

The fourth proportional to 508,082.90, 762,124.35 and 425,414.30 is: 638,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,082.90 : 762,124.35 = 425,414.30 : x
  2. Step 2: Convert to fraction form
    508,082.90/762,124.35 = 425,414.30/x
  3. Step 3: Cross multiply
    508,082.90x = 762,124.35 × 425,414.30
  4. Step 4: Simplify right side
    508,082.90x = 324,218,596,868.21
  5. Step 5: Solve for x
    x = 324,218,596,868.21/508,082.90
  6. Step 6: Final answer
    x = 638,121.45

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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.