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Finding the Fourth Proportional to 720,559.06, 994,375.41 and 393,872.52

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Solution

The fourth proportional to 720,559.06, 994,375.41 and 393,872.52 is: 543,546.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,559.06 : 994,375.41 = 393,872.52 : x
  2. Step 2: Convert to fraction form
    720,559.06/994,375.41 = 393,872.52/x
  3. Step 3: Cross multiply
    720,559.06x = 994,375.41 × 393,872.52
  4. Step 4: Simplify right side
    720,559.06x = 391,657,148,562.73
  5. Step 5: Solve for x
    x = 391,657,148,562.73/720,559.06
  6. Step 6: Final answer
    x = 543,546.21

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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.