Home / 979,815.60-1,469,723.40-418,906.80

Finding the Fourth Proportional to 979,815.60, 1,469,723.40 and 418,906.80

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Solution

The fourth proportional to 979,815.60, 1,469,723.40 and 418,906.80 is: 628,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,815.60 : 1,469,723.40 = 418,906.80 : x
  2. Step 2: Convert to fraction form
    979,815.60/1,469,723.40 = 418,906.80/x
  3. Step 3: Cross multiply
    979,815.60x = 1,469,723.40 × 418,906.80
  4. Step 4: Simplify right side
    979,815.60x = 615,677,126,379.12
  5. Step 5: Solve for x
    x = 615,677,126,379.12/979,815.60
  6. Step 6: Final answer
    x = 628,360.20

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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.