Home / 394,610.27-591,920.87-128,372.18

Finding the Fourth Proportional to 394,610.27, 591,920.87 and 128,372.18

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Solution

The fourth proportional to 394,610.27, 591,920.87 and 128,372.18 is: 192,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,610.27 : 591,920.87 = 128,372.18 : x
  2. Step 2: Convert to fraction form
    394,610.27/591,920.87 = 128,372.18/x
  3. Step 3: Cross multiply
    394,610.27x = 591,920.87 × 128,372.18
  4. Step 4: Simplify right side
    394,610.27x = 75,986,168,867.93
  5. Step 5: Solve for x
    x = 75,986,168,867.93/394,610.27
  6. Step 6: Final answer
    x = 192,560.04

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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.