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Finding the Fourth Proportional to 768,286.77, 1,060,252.71 and 424,121.88

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Solution

The fourth proportional to 768,286.77, 1,060,252.71 and 424,121.88 is: 585,297.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,286.77 : 1,060,252.71 = 424,121.88 : x
  2. Step 2: Convert to fraction form
    768,286.77/1,060,252.71 = 424,121.88/x
  3. Step 3: Cross multiply
    768,286.77x = 1,060,252.71 × 424,121.88
  4. Step 4: Simplify right side
    768,286.77x = 449,676,372,640.30
  5. Step 5: Solve for x
    x = 449,676,372,640.30/768,286.77
  6. Step 6: Final answer
    x = 585,297.56

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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.