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Finding the Fourth Proportional to 911,418.35, 1,257,753.24 and 503,520.26

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Solution

The fourth proportional to 911,418.35, 1,257,753.24 and 503,520.26 is: 694,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,418.35 : 1,257,753.24 = 503,520.26 : x
  2. Step 2: Convert to fraction form
    911,418.35/1,257,753.24 = 503,520.26/x
  3. Step 3: Cross multiply
    911,418.35x = 1,257,753.24 × 503,520.26
  4. Step 4: Simplify right side
    911,418.35x = 633,304,232,131.88
  5. Step 5: Solve for x
    x = 633,304,232,131.88/911,418.35
  6. Step 6: Final answer
    x = 694,855.70

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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.