Home / 458,487.45-687,761.55-121,523.40

Finding the Fourth Proportional to 458,487.45, 687,761.55 and 121,523.40

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Solution

The fourth proportional to 458,487.45, 687,761.55 and 121,523.40 is: 182,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,487.45 : 687,761.55 = 121,523.40 : x
  2. Step 2: Convert to fraction form
    458,487.45/687,761.55 = 121,523.40/x
  3. Step 3: Cross multiply
    458,487.45x = 687,761.55 × 121,523.40
  4. Step 4: Simplify right side
    458,487.45x = 83,579,121,945.27
  5. Step 5: Solve for x
    x = 83,579,121,945.27/458,487.45
  6. Step 6: Final answer
    x = 182,293.15

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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.