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Finding the Fourth Proportional to 722,177.28, 996,592.48 and 399,880.44

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Solution

The fourth proportional to 722,177.28, 996,592.48 and 399,880.44 is: 551,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,177.28 : 996,592.48 = 399,880.44 : x
  2. Step 2: Convert to fraction form
    722,177.28/996,592.48 = 399,880.44/x
  3. Step 3: Cross multiply
    722,177.28x = 996,592.48 × 399,880.44
  4. Step 4: Simplify right side
    722,177.28x = 398,517,839,403.09
  5. Step 5: Solve for x
    x = 398,517,839,403.09/722,177.28
  6. Step 6: Final answer
    x = 551,828.27

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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.