Home / 394,472.20-591,708.30-331,486.60

Finding the Fourth Proportional to 394,472.20, 591,708.30 and 331,486.60

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Solution

The fourth proportional to 394,472.20, 591,708.30 and 331,486.60 is: 497,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,472.20 : 591,708.30 = 331,486.60 : x
  2. Step 2: Convert to fraction form
    394,472.20/591,708.30 = 331,486.60/x
  3. Step 3: Cross multiply
    394,472.20x = 591,708.30 × 331,486.60
  4. Step 4: Simplify right side
    394,472.20x = 196,143,372,558.78
  5. Step 5: Solve for x
    x = 196,143,372,558.78/394,472.20
  6. Step 6: Final answer
    x = 497,229.90

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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.