Home / 979,644.60-1,469,466.90-418,735.80

Finding the Fourth Proportional to 979,644.60, 1,469,466.90 and 418,735.80

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Solution

The fourth proportional to 979,644.60, 1,469,466.90 and 418,735.80 is: 628,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,644.60 : 1,469,466.90 = 418,735.80 : x
  2. Step 2: Convert to fraction form
    979,644.60/1,469,466.90 = 418,735.80/x
  3. Step 3: Cross multiply
    979,644.60x = 1,469,466.90 × 418,735.80
  4. Step 4: Simplify right side
    979,644.60x = 615,318,397,945.02
  5. Step 5: Solve for x
    x = 615,318,397,945.02/979,644.60
  6. Step 6: Final answer
    x = 628,103.70

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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.