Home / 394,330.20-591,495.30-331,344.60

Finding the Fourth Proportional to 394,330.20, 591,495.30 and 331,344.60

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Solution

The fourth proportional to 394,330.20, 591,495.30 and 331,344.60 is: 497,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,330.20 : 591,495.30 = 331,344.60 : x
  2. Step 2: Convert to fraction form
    394,330.20/591,495.30 = 331,344.60/x
  3. Step 3: Cross multiply
    394,330.20x = 591,495.30 × 331,344.60
  4. Step 4: Simplify right side
    394,330.20x = 195,988,773,580.38
  5. Step 5: Solve for x
    x = 195,988,773,580.38/394,330.20
  6. Step 6: Final answer
    x = 497,016.90

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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.