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Finding the Fourth Proportional to 892,803.80, 1,339,076.10 and 261,651.80

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Solution

The fourth proportional to 892,803.80, 1,339,076.10 and 261,651.80 is: 392,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,803.80 : 1,339,076.10 = 261,651.80 : x
  2. Step 2: Convert to fraction form
    892,803.80/1,339,076.10 = 261,651.80/x
  3. Step 3: Cross multiply
    892,803.80x = 1,339,076.10 × 261,651.80
  4. Step 4: Simplify right side
    892,803.80x = 350,371,671,901.98
  5. Step 5: Solve for x
    x = 350,371,671,901.98/892,803.80
  6. Step 6: Final answer
    x = 392,439.72

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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.