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Finding the Fourth Proportional to 547,175.98, 821,052.87 and 388,278.73

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Solution

The fourth proportional to 547,175.98, 821,052.87 and 388,278.73 is: 582,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,175.98 : 821,052.87 = 388,278.73 : x
  2. Step 2: Convert to fraction form
    547,175.98/821,052.87 = 388,278.73/x
  3. Step 3: Cross multiply
    547,175.98x = 821,052.87 × 388,278.73
  4. Step 4: Simplify right side
    547,175.98x = 318,797,365,626.46
  5. Step 5: Solve for x
    x = 318,797,365,626.46/547,175.98
  6. Step 6: Final answer
    x = 582,623.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.