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Finding the Fourth Proportional to 892,342.38, 1,231,446.80 and 484,443.90

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Solution

The fourth proportional to 892,342.38, 1,231,446.80 and 484,443.90 is: 668,540.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,342.38 : 1,231,446.80 = 484,443.90 : x
  2. Step 2: Convert to fraction form
    892,342.38/1,231,446.80 = 484,443.90/x
  3. Step 3: Cross multiply
    892,342.38x = 1,231,446.80 × 484,443.90
  4. Step 4: Simplify right side
    892,342.38x = 596,566,888,920.63
  5. Step 5: Solve for x
    x = 596,566,888,920.63/892,342.38
  6. Step 6: Final answer
    x = 668,540.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.