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Finding the Fourth Proportional to 892,375.68, 1,338,737.60 and 261,299.84

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Solution

The fourth proportional to 892,375.68, 1,338,737.60 and 261,299.84 is: 392,000.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,375.68 : 1,338,737.60 = 261,299.84 : x
  2. Step 2: Convert to fraction form
    892,375.68/1,338,737.60 = 261,299.84/x
  3. Step 3: Cross multiply
    892,375.68x = 1,338,737.60 × 261,299.84
  4. Step 4: Simplify right side
    892,375.68x = 349,811,920,681.98
  5. Step 5: Solve for x
    x = 349,811,920,681.98/892,375.68
  6. Step 6: Final answer
    x = 392,000.73

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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.