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Finding the Fourth Proportional to 892,125.72, 1,231,134.72 and 484,227.64

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Solution

The fourth proportional to 892,125.72, 1,231,134.72 and 484,227.64 is: 668,234.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,125.72 : 1,231,134.72 = 484,227.64 : x
  2. Step 2: Convert to fraction form
    892,125.72/1,231,134.72 = 484,227.64/x
  3. Step 3: Cross multiply
    892,125.72x = 1,231,134.72 × 484,227.64
  4. Step 4: Simplify right side
    892,125.72x = 596,149,459,987.66
  5. Step 5: Solve for x
    x = 596,149,459,987.66/892,125.72
  6. Step 6: Final answer
    x = 668,234.81

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Double scale
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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.