Home / 457,943.12-687,309.96-317,800.16

Finding the Fourth Proportional to 457,943.12, 687,309.96 and 317,800.16

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Solution

The fourth proportional to 457,943.12, 687,309.96 and 317,800.16 is: 476,974.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,943.12 : 687,309.96 = 317,800.16 : x
  2. Step 2: Convert to fraction form
    457,943.12/687,309.96 = 317,800.16/x
  3. Step 3: Cross multiply
    457,943.12x = 687,309.96 × 317,800.16
  4. Step 4: Simplify right side
    457,943.12x = 218,427,215,257.59
  5. Step 5: Solve for x
    x = 218,427,215,257.59/457,943.12
  6. Step 6: Final answer
    x = 476,974.55

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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.