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Finding the Fourth Proportional to 426,884.87, 639,179.82 and 325,198.49

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Solution

The fourth proportional to 426,884.87, 639,179.82 and 325,198.49 is: 486,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,884.87 : 639,179.82 = 325,198.49 : x
  2. Step 2: Convert to fraction form
    426,884.87/639,179.82 = 325,198.49/x
  3. Step 3: Cross multiply
    426,884.87x = 639,179.82 × 325,198.49
  4. Step 4: Simplify right side
    426,884.87x = 207,860,309,106.57
  5. Step 5: Solve for x
    x = 207,860,309,106.57/426,884.87
  6. Step 6: Final answer
    x = 486,923.58

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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.