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Finding the Fourth Proportional to 862,216.96, 1,189,859.73 and 499,850.90

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Solution

The fourth proportional to 862,216.96, 1,189,859.73 and 499,850.90 is: 689,794.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,216.96 : 1,189,859.73 = 499,850.90 : x
  2. Step 2: Convert to fraction form
    862,216.96/1,189,859.73 = 499,850.90/x
  3. Step 3: Cross multiply
    862,216.96x = 1,189,859.73 × 499,850.90
  4. Step 4: Simplify right side
    862,216.96x = 594,752,456,914.26
  5. Step 5: Solve for x
    x = 594,752,456,914.26/862,216.96
  6. Step 6: Final answer
    x = 689,794.43

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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.