Home / 465,857.20-698,785.80-387,125.20

Finding the Fourth Proportional to 465,857.20, 698,785.80 and 387,125.20

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Solution

The fourth proportional to 465,857.20, 698,785.80 and 387,125.20 is: 580,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,857.20 : 698,785.80 = 387,125.20 : x
  2. Step 2: Convert to fraction form
    465,857.20/698,785.80 = 387,125.20/x
  3. Step 3: Cross multiply
    465,857.20x = 698,785.80 × 387,125.20
  4. Step 4: Simplify right side
    465,857.20x = 270,517,592,582.16
  5. Step 5: Solve for x
    x = 270,517,592,582.16/465,857.20
  6. Step 6: Final answer
    x = 580,687.80

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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.