Home / 392,829.78-589,278.66-108,520.26

Finding the Fourth Proportional to 392,829.78, 589,278.66 and 108,520.26

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Solution

The fourth proportional to 392,829.78, 589,278.66 and 108,520.26 is: 162,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,829.78 : 589,278.66 = 108,520.26 : x
  2. Step 2: Convert to fraction form
    392,829.78/589,278.66 = 108,520.26/x
  3. Step 3: Cross multiply
    392,829.78x = 589,278.66 × 108,520.26
  4. Step 4: Simplify right side
    392,829.78x = 63,948,673,395.65
  5. Step 5: Solve for x
    x = 63,948,673,395.65/392,829.78
  6. Step 6: Final answer
    x = 162,789.78

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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.