Home / 458,311.60-687,467.40-125,921.20

Finding the Fourth Proportional to 458,311.60, 687,467.40 and 125,921.20

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Solution

The fourth proportional to 458,311.60, 687,467.40 and 125,921.20 is: 188,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,311.60 : 687,467.40 = 125,921.20 : x
  2. Step 2: Convert to fraction form
    458,311.60/687,467.40 = 125,921.20/x
  3. Step 3: Cross multiply
    458,311.60x = 687,467.40 × 125,921.20
  4. Step 4: Simplify right side
    458,311.60x = 86,566,719,968.88
  5. Step 5: Solve for x
    x = 86,566,719,968.88/458,311.60
  6. Step 6: Final answer
    x = 188,881.80

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1.5x scale

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.