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Finding the Fourth Proportional to 862,785.80, 1,294,182 and 263,744.64

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Solution

The fourth proportional to 862,785.80, 1,294,182 and 263,744.64 is: 395,617.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,785.80 : 1,294,182 = 263,744.64 : x
  2. Step 2: Convert to fraction form
    862,785.80/1,294,182 = 263,744.64/x
  3. Step 3: Cross multiply
    862,785.80x = 1,294,182 × 263,744.64
  4. Step 4: Simplify right side
    862,785.80x = 341,333,565,684.48
  5. Step 5: Solve for x
    x = 341,333,565,684.48/862,785.80
  6. Step 6: Final answer
    x = 395,617.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.