Home / 458,251.20-687,992.40-268,905.60

Finding the Fourth Proportional to 458,251.20, 687,992.40 and 268,905.60

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Solution

The fourth proportional to 458,251.20, 687,992.40 and 268,905.60 is: 403,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,251.20 : 687,992.40 = 268,905.60 : x
  2. Step 2: Convert to fraction form
    458,251.20/687,992.40 = 268,905.60/x
  3. Step 3: Cross multiply
    458,251.20x = 687,992.40 × 268,905.60
  4. Step 4: Simplify right side
    458,251.20x = 185,005,009,117.44
  5. Step 5: Solve for x
    x = 185,005,009,117.44/458,251.20
  6. Step 6: Final answer
    x = 403,719.64

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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.