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Finding the Fourth Proportional to 659,177.70, 987,636.48 and 442,630.52

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Solution

The fourth proportional to 659,177.70, 987,636.48 and 442,630.52 is: 663,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,177.70 : 987,636.48 = 442,630.52 : x
  2. Step 2: Convert to fraction form
    659,177.70/987,636.48 = 442,630.52/x
  3. Step 3: Cross multiply
    659,177.70x = 987,636.48 × 442,630.52
  4. Step 4: Simplify right side
    659,177.70x = 437,158,048,713.37
  5. Step 5: Solve for x
    x = 437,158,048,713.37/659,177.70
  6. Step 6: Final answer
    x = 663,186.95

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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.