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Finding the Fourth Proportional to 722,491.98, 997,046.91 and 400,207.02

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Solution

The fourth proportional to 722,491.98, 997,046.91 and 400,207.02 is: 552,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,491.98 : 997,046.91 = 400,207.02 : x
  2. Step 2: Convert to fraction form
    722,491.98/997,046.91 = 400,207.02/x
  3. Step 3: Cross multiply
    722,491.98x = 997,046.91 × 400,207.02
  4. Step 4: Simplify right side
    722,491.98x = 399,025,172,651.31
  5. Step 5: Solve for x
    x = 399,025,172,651.31/722,491.98
  6. Step 6: Final answer
    x = 552,290.11

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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.