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Finding the Fourth Proportional to 479,591.91, 661,844.96 and 261,811.82

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Solution

The fourth proportional to 479,591.91, 661,844.96 and 261,811.82 is: 361,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,591.91 : 661,844.96 = 261,811.82 : x
  2. Step 2: Convert to fraction form
    479,591.91/661,844.96 = 261,811.82/x
  3. Step 3: Cross multiply
    479,591.91x = 661,844.96 × 261,811.82
  4. Step 4: Simplify right side
    479,591.91x = 173,278,828,917.14
  5. Step 5: Solve for x
    x = 173,278,828,917.14/479,591.91
  6. Step 6: Final answer
    x = 361,304.74

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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.