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Finding the Fourth Proportional to 659,432.20, 988,370.70 and 343,726.60

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Solution

The fourth proportional to 659,432.20, 988,370.70 and 343,726.60 is: 515,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,432.20 : 988,370.70 = 343,726.60 : x
  2. Step 2: Convert to fraction form
    659,432.20/988,370.70 = 343,726.60/x
  3. Step 3: Cross multiply
    659,432.20x = 988,370.70 × 343,726.60
  4. Step 4: Simplify right side
    659,432.20x = 339,729,300,250.62
  5. Step 5: Solve for x
    x = 339,729,300,250.62/659,432.20
  6. Step 6: Final answer
    x = 515,184.58

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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.