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Finding the Fourth Proportional to 659,171.55, 987,734.60 and 457,161.69

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Solution

The fourth proportional to 659,171.55, 987,734.60 and 457,161.69 is: 685,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,171.55 : 987,734.60 = 457,161.69 : x
  2. Step 2: Convert to fraction form
    659,171.55/987,734.60 = 457,161.69/x
  3. Step 3: Cross multiply
    659,171.55x = 987,734.60 × 457,161.69
  4. Step 4: Simplify right side
    659,171.55x = 451,554,423,322.56
  5. Step 5: Solve for x
    x = 451,554,423,322.56/659,171.55
  6. Step 6: Final answer
    x = 685,033.24

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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.