Home / 722,083.60-996,512.20-399,829.28

Finding the Fourth Proportional to 722,083.60, 996,512.20 and 399,829.28

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Solution

The fourth proportional to 722,083.60, 996,512.20 and 399,829.28 is: 551,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,083.60 : 996,512.20 = 399,829.28 : x
  2. Step 2: Convert to fraction form
    722,083.60/996,512.20 = 399,829.28/x
  3. Step 3: Cross multiply
    722,083.60x = 996,512.20 × 399,829.28
  4. Step 4: Simplify right side
    722,083.60x = 398,434,755,437.22
  5. Step 5: Solve for x
    x = 398,434,755,437.22/722,083.60
  6. Step 6: Final answer
    x = 551,784.80

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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.