Home / 398,628.20-597,942.30-327,769.40

Finding the Fourth Proportional to 398,628.20, 597,942.30 and 327,769.40

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Solution

The fourth proportional to 398,628.20, 597,942.30 and 327,769.40 is: 491,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,628.20 : 597,942.30 = 327,769.40 : x
  2. Step 2: Convert to fraction form
    398,628.20/597,942.30 = 327,769.40/x
  3. Step 3: Cross multiply
    398,628.20x = 597,942.30 × 327,769.40
  4. Step 4: Simplify right side
    398,628.20x = 195,987,188,905.62
  5. Step 5: Solve for x
    x = 195,987,188,905.62/398,628.20
  6. Step 6: Final answer
    x = 491,654.10

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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.