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Finding the Fourth Proportional to 892,757.80, 1,339,007.10 and 261,605.80

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Solution

The fourth proportional to 892,757.80, 1,339,007.10 and 261,605.80 is: 392,370.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,757.80 : 1,339,007.10 = 261,605.80 : x
  2. Step 2: Convert to fraction form
    892,757.80/1,339,007.10 = 261,605.80/x
  3. Step 3: Cross multiply
    892,757.80x = 1,339,007.10 × 261,605.80
  4. Step 4: Simplify right side
    892,757.80x = 350,292,023,601.18
  5. Step 5: Solve for x
    x = 350,292,023,601.18/892,757.80
  6. Step 6: Final answer
    x = 392,370.72

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1.5x scale

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.