Home / 722,103.60-996,539.80-399,849.36

Finding the Fourth Proportional to 722,103.60, 996,539.80 and 399,849.36

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Solution

The fourth proportional to 722,103.60, 996,539.80 and 399,849.36 is: 551,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,103.60 : 996,539.80 = 399,849.36 : x
  2. Step 2: Convert to fraction form
    722,103.60/996,539.80 = 399,849.36/x
  3. Step 3: Cross multiply
    722,103.60x = 996,539.80 × 399,849.36
  4. Step 4: Simplify right side
    722,103.60x = 398,465,801,244.53
  5. Step 5: Solve for x
    x = 398,465,801,244.53/722,103.60
  6. Step 6: Final answer
    x = 551,812.51

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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.