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Finding the Fourth Proportional to 393,150.74, 588,861.68 and 324,909.36

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Solution

The fourth proportional to 393,150.74, 588,861.68 and 324,909.36 is: 486,649.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,150.74 : 588,861.68 = 324,909.36 : x
  2. Step 2: Convert to fraction form
    393,150.74/588,861.68 = 324,909.36/x
  3. Step 3: Cross multiply
    393,150.74x = 588,861.68 × 324,909.36
  4. Step 4: Simplify right side
    393,150.74x = 191,326,671,577.33
  5. Step 5: Solve for x
    x = 191,326,671,577.33/393,150.74
  6. Step 6: Final answer
    x = 486,649.65

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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.