Home / 643,694.20-966,578.10-486,100.60

Finding the Fourth Proportional to 643,694.20, 966,578.10 and 486,100.60

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Solution

The fourth proportional to 643,694.20, 966,578.10 and 486,100.60 is: 729,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,694.20 : 966,578.10 = 486,100.60 : x
  2. Step 2: Convert to fraction form
    643,694.20/966,578.10 = 486,100.60/x
  3. Step 3: Cross multiply
    643,694.20x = 966,578.10 × 486,100.60
  4. Step 4: Simplify right side
    643,694.20x = 469,854,194,356.86
  5. Step 5: Solve for x
    x = 469,854,194,356.86/643,694.20
  6. Step 6: Final answer
    x = 729,933.86

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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.