Home / 458,505.45-687,788.55-121,541.40

Finding the Fourth Proportional to 458,505.45, 687,788.55 and 121,541.40

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Solution

The fourth proportional to 458,505.45, 687,788.55 and 121,541.40 is: 182,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,505.45 : 687,788.55 = 121,541.40 : x
  2. Step 2: Convert to fraction form
    458,505.45/687,788.55 = 121,541.40/x
  3. Step 3: Cross multiply
    458,505.45x = 687,788.55 × 121,541.40
  4. Step 4: Simplify right side
    458,505.45x = 83,594,783,270.97
  5. Step 5: Solve for x
    x = 83,594,783,270.97/458,505.45
  6. Step 6: Final answer
    x = 182,320.15

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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.