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Finding the Fourth Proportional to 1,246,772.52, 1,719,748.26 and 864,659.88

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Solution

The fourth proportional to 1,246,772.52, 1,719,748.26 and 864,659.88 is: 1,192,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,772.52 : 1,719,748.26 = 864,659.88 : x
  2. Step 2: Convert to fraction form
    1,246,772.52/1,719,748.26 = 864,659.88/x
  3. Step 3: Cross multiply
    1,246,772.52x = 1,719,748.26 × 864,659.88
  4. Step 4: Simplify right side
    1,246,772.52x = 1,486,997,324,121.81
  5. Step 5: Solve for x
    x = 1,486,997,324,121.81/1,246,772.52
  6. Step 6: Final answer
    x = 1,192,677.33

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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.