Home / 394,989.27-592,545.33-128,687.73

Finding the Fourth Proportional to 394,989.27, 592,545.33 and 128,687.73

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Solution

The fourth proportional to 394,989.27, 592,545.33 and 128,687.73 is: 193,051.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,989.27 : 592,545.33 = 128,687.73 : x
  2. Step 2: Convert to fraction form
    394,989.27/592,545.33 = 128,687.73/x
  3. Step 3: Cross multiply
    394,989.27x = 592,545.33 × 128,687.73
  4. Step 4: Simplify right side
    394,989.27x = 76,253,313,439.80
  5. Step 5: Solve for x
    x = 76,253,313,439.80/394,989.27
  6. Step 6: Final answer
    x = 193,051.61

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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.