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Finding the Fourth Proportional to 508,408.39, 762,609.28 and 129,325.87

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Solution

The fourth proportional to 508,408.39, 762,609.28 and 129,325.87 is: 193,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,408.39 : 762,609.28 = 129,325.87 : x
  2. Step 2: Convert to fraction form
    508,408.39/762,609.28 = 129,325.87/x
  3. Step 3: Cross multiply
    508,408.39x = 762,609.28 × 129,325.87
  4. Step 4: Simplify right side
    508,408.39x = 98,625,108,606.07
  5. Step 5: Solve for x
    x = 98,625,108,606.07/508,408.39
  6. Step 6: Final answer
    x = 193,987.96

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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.