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Finding the Fourth Proportional to 892,115.78, 1,339,502.28 and 360,674.78

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Solution

The fourth proportional to 892,115.78, 1,339,502.28 and 360,674.78 is: 541,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,115.78 : 1,339,502.28 = 360,674.78 : x
  2. Step 2: Convert to fraction form
    892,115.78/1,339,502.28 = 360,674.78/x
  3. Step 3: Cross multiply
    892,115.78x = 1,339,502.28 × 360,674.78
  4. Step 4: Simplify right side
    892,115.78x = 483,124,690,148.50
  5. Step 5: Solve for x
    x = 483,124,690,148.50/892,115.78
  6. Step 6: Final answer
    x = 541,549.32

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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.