Home / 498,618.20-747,708.60-198,999.20

Finding the Fourth Proportional to 498,618.20, 747,708.60 and 198,999.20

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Solution

The fourth proportional to 498,618.20, 747,708.60 and 198,999.20 is: 298,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,618.20 : 747,708.60 = 198,999.20 : x
  2. Step 2: Convert to fraction form
    498,618.20/747,708.60 = 198,999.20/x
  3. Step 3: Cross multiply
    498,618.20x = 747,708.60 × 198,999.20
  4. Step 4: Simplify right side
    498,618.20x = 148,793,413,233.12
  5. Step 5: Solve for x
    x = 148,793,413,233.12/498,618.20
  6. Step 6: Final answer
    x = 298,411.52

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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.