Home / 643,692.20-966,575.10-486,098.60

Finding the Fourth Proportional to 643,692.20, 966,575.10 and 486,098.60

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Solution

The fourth proportional to 643,692.20, 966,575.10 and 486,098.60 is: 729,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,692.20 : 966,575.10 = 486,098.60 : x
  2. Step 2: Convert to fraction form
    643,692.20/966,575.10 = 486,098.60/x
  3. Step 3: Cross multiply
    643,692.20x = 966,575.10 × 486,098.60
  4. Step 4: Simplify right side
    643,692.20x = 469,850,802,904.86
  5. Step 5: Solve for x
    x = 469,850,802,904.86/643,692.20
  6. Step 6: Final answer
    x = 729,930.86

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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.