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Finding the Fourth Proportional to 643,454.53, 888,046.00 and 371,521.97

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Solution

The fourth proportional to 643,454.53, 888,046.00 and 371,521.97 is: 512,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,454.53 : 888,046.00 = 371,521.97 : x
  2. Step 2: Convert to fraction form
    643,454.53/888,046.00 = 371,521.97/x
  3. Step 3: Cross multiply
    643,454.53x = 888,046.00 × 371,521.97
  4. Step 4: Simplify right side
    643,454.53x = 329,928,596,908.04
  5. Step 5: Solve for x
    x = 329,928,596,908.04/643,454.53
  6. Step 6: Final answer
    x = 512,745.78

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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.