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Finding the Fourth Proportional to 398,620.20, 597,930.30 and 382,873.80

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Solution

The fourth proportional to 398,620.20, 597,930.30 and 382,873.80 is: 574,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,620.20 : 597,930.30 = 382,873.80 : x
  2. Step 2: Convert to fraction form
    398,620.20/597,930.30 = 382,873.80/x
  3. Step 3: Cross multiply
    398,620.20x = 597,930.30 × 382,873.80
  4. Step 4: Simplify right side
    398,620.20x = 228,931,846,096.14
  5. Step 5: Solve for x
    x = 228,931,846,096.14/398,620.20
  6. Step 6: Final answer
    x = 574,310.70

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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.