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Finding the Fourth Proportional to 485,540.94, 669,805.83 and 324,446.52

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Solution

The fourth proportional to 485,540.94, 669,805.83 and 324,446.52 is: 447,575.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,540.94 : 669,805.83 = 324,446.52 : x
  2. Step 2: Convert to fraction form
    485,540.94/669,805.83 = 324,446.52/x
  3. Step 3: Cross multiply
    485,540.94x = 669,805.83 × 324,446.52
  4. Step 4: Simplify right side
    485,540.94x = 217,316,170,619.21
  5. Step 5: Solve for x
    x = 217,316,170,619.21/485,540.94
  6. Step 6: Final answer
    x = 447,575.38

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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.