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Finding the Fourth Proportional to 508,088.40, 762,132.60 and 425,419.80

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Solution

The fourth proportional to 508,088.40, 762,132.60 and 425,419.80 is: 638,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,088.40 : 762,132.60 = 425,419.80 : x
  2. Step 2: Convert to fraction form
    508,088.40/762,132.60 = 425,419.80/x
  3. Step 3: Cross multiply
    508,088.40x = 762,132.60 × 425,419.80
  4. Step 4: Simplify right side
    508,088.40x = 324,226,298,265.48
  5. Step 5: Solve for x
    x = 324,226,298,265.48/508,088.40
  6. Step 6: Final answer
    x = 638,129.70

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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.