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Finding the Fourth Proportional to 557,476.22, 769,469.15 and 328,107.10

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Solution

The fourth proportional to 557,476.22, 769,469.15 and 328,107.10 is: 452,877.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,476.22 : 769,469.15 = 328,107.10 : x
  2. Step 2: Convert to fraction form
    557,476.22/769,469.15 = 328,107.10/x
  3. Step 3: Cross multiply
    557,476.22x = 769,469.15 × 328,107.10
  4. Step 4: Simplify right side
    557,476.22x = 252,468,287,781.76
  5. Step 5: Solve for x
    x = 252,468,287,781.76/557,476.22
  6. Step 6: Final answer
    x = 452,877.24

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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.