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Finding the Fourth Proportional to 659,182.40, 987,218.40 and 447,675.20

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Solution

The fourth proportional to 659,182.40, 987,218.40 and 447,675.20 is: 670,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,182.40 : 987,218.40 = 447,675.20 : x
  2. Step 2: Convert to fraction form
    659,182.40/987,218.40 = 447,675.20/x
  3. Step 3: Cross multiply
    659,182.40x = 987,218.40 × 447,675.20
  4. Step 4: Simplify right side
    659,182.40x = 441,953,194,663.68
  5. Step 5: Solve for x
    x = 441,953,194,663.68/659,182.40
  6. Step 6: Final answer
    x = 670,456.61

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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.