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Finding the Fourth Proportional to 722,159.93, 996,568.52 and 399,863.11

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Solution

The fourth proportional to 722,159.93, 996,568.52 and 399,863.11 is: 551,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,159.93 : 996,568.52 = 399,863.11 : x
  2. Step 2: Convert to fraction form
    722,159.93/996,568.52 = 399,863.11/x
  3. Step 3: Cross multiply
    722,159.93x = 996,568.52 × 399,863.11
  4. Step 4: Simplify right side
    722,159.93x = 398,490,982,310.28
  5. Step 5: Solve for x
    x = 398,490,982,310.28/722,159.93
  6. Step 6: Final answer
    x = 551,804.34

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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.