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Finding the Fourth Proportional to 659,013.62, 987,392.10 and 359,704.31

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Solution

The fourth proportional to 659,013.62, 987,392.10 and 359,704.31 is: 538,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,013.62 : 987,392.10 = 359,704.31 : x
  2. Step 2: Convert to fraction form
    659,013.62/987,392.10 = 359,704.31/x
  3. Step 3: Cross multiply
    659,013.62x = 987,392.10 × 359,704.31
  4. Step 4: Simplify right side
    659,013.62x = 355,169,194,029.95
  5. Step 5: Solve for x
    x = 355,169,194,029.95/659,013.62
  6. Step 6: Final answer
    x = 538,940.60

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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.