Home / 394,022.32-591,046.56-127,785.04

Finding the Fourth Proportional to 394,022.32, 591,046.56 and 127,785.04

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Solution

The fourth proportional to 394,022.32, 591,046.56 and 127,785.04 is: 191,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,022.32 : 591,046.56 = 127,785.04 : x
  2. Step 2: Convert to fraction form
    394,022.32/591,046.56 = 127,785.04/x
  3. Step 3: Cross multiply
    394,022.32x = 591,046.56 × 127,785.04
  4. Step 4: Simplify right side
    394,022.32x = 75,526,908,311.46
  5. Step 5: Solve for x
    x = 75,526,908,311.46/394,022.32
  6. Step 6: Final answer
    x = 191,681.80

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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.