Home / 723,542.08-998,551.20-421,729.60

Finding the Fourth Proportional to 723,542.08, 998,551.20 and 421,729.60

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Solution

The fourth proportional to 723,542.08, 998,551.20 and 421,729.60 is: 582,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,542.08 : 998,551.20 = 421,729.60 : x
  2. Step 2: Convert to fraction form
    723,542.08/998,551.20 = 421,729.60/x
  3. Step 3: Cross multiply
    723,542.08x = 998,551.20 × 421,729.60
  4. Step 4: Simplify right side
    723,542.08x = 421,118,598,155.52
  5. Step 5: Solve for x
    x = 421,118,598,155.52/723,542.08
  6. Step 6: Final answer
    x = 582,023.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.