Home / 722,087.60-996,517.72-399,833.28

Finding the Fourth Proportional to 722,087.60, 996,517.72 and 399,833.28

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Solution

The fourth proportional to 722,087.60, 996,517.72 and 399,833.28 is: 551,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,087.60 : 996,517.72 = 399,833.28 : x
  2. Step 2: Convert to fraction form
    722,087.60/996,517.72 = 399,833.28/x
  3. Step 3: Cross multiply
    722,087.60x = 996,517.72 × 399,833.28
  4. Step 4: Simplify right side
    722,087.60x = 398,440,948,565.72
  5. Step 5: Solve for x
    x = 398,440,948,565.72/722,087.60
  6. Step 6: Final answer
    x = 551,790.32

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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.