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Finding the Fourth Proportional to 722,249.17, 996,702.96 and 399,958.88

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Solution

The fourth proportional to 722,249.17, 996,702.96 and 399,958.88 is: 551,942.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,249.17 : 996,702.96 = 399,958.88 : x
  2. Step 2: Convert to fraction form
    722,249.17/996,702.96 = 399,958.88/x
  3. Step 3: Cross multiply
    722,249.17x = 996,702.96 × 399,958.88
  4. Step 4: Simplify right side
    722,249.17x = 398,640,196,828.56
  5. Step 5: Solve for x
    x = 398,640,196,828.56/722,249.17
  6. Step 6: Final answer
    x = 551,942.75

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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.