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Finding the Fourth Proportional to 1,261,766.91, 1,741,245.42 and 717,902.69

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Solution

The fourth proportional to 1,261,766.91, 1,741,245.42 and 717,902.69 is: 990,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,766.91 : 1,741,245.42 = 717,902.69 : x
  2. Step 2: Convert to fraction form
    1,261,766.91/1,741,245.42 = 717,902.69/x
  3. Step 3: Cross multiply
    1,261,766.91x = 1,741,245.42 × 717,902.69
  4. Step 4: Simplify right side
    1,261,766.91x = 1,250,044,770,968.18
  5. Step 5: Solve for x
    x = 1,250,044,770,968.18/1,261,766.91
  6. Step 6: Final answer
    x = 990,709.74

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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.