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Finding the Fourth Proportional to 578,589.75, 868,445.82 and 279,281.25

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Solution

The fourth proportional to 578,589.75, 868,445.82 and 279,281.25 is: 419,192.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,589.75 : 868,445.82 = 279,281.25 : x
  2. Step 2: Convert to fraction form
    578,589.75/868,445.82 = 279,281.25/x
  3. Step 3: Cross multiply
    578,589.75x = 868,445.82 × 279,281.25
  4. Step 4: Simplify right side
    578,589.75x = 242,540,634,166.88
  5. Step 5: Solve for x
    x = 242,540,634,166.88/578,589.75
  6. Step 6: Final answer
    x = 419,192.76

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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.