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Finding the Fourth Proportional to 659,144.80, 988,717.20 and 360,546.40

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Solution

The fourth proportional to 659,144.80, 988,717.20 and 360,546.40 is: 540,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,144.80 : 988,717.20 = 360,546.40 : x
  2. Step 2: Convert to fraction form
    659,144.80/988,717.20 = 360,546.40/x
  3. Step 3: Cross multiply
    659,144.80x = 988,717.20 × 360,546.40
  4. Step 4: Simplify right side
    659,144.80x = 356,478,427,078.08
  5. Step 5: Solve for x
    x = 356,478,427,078.08/659,144.80
  6. Step 6: Final answer
    x = 540,819.60

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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.