Home / 418,942.80-628,414.20-325,515.60

Finding the Fourth Proportional to 418,942.80, 628,414.20 and 325,515.60

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Solution

The fourth proportional to 418,942.80, 628,414.20 and 325,515.60 is: 488,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,942.80 : 628,414.20 = 325,515.60 : x
  2. Step 2: Convert to fraction form
    418,942.80/628,414.20 = 325,515.60/x
  3. Step 3: Cross multiply
    418,942.80x = 628,414.20 × 325,515.60
  4. Step 4: Simplify right side
    418,942.80x = 204,558,625,361.52
  5. Step 5: Solve for x
    x = 204,558,625,361.52/418,942.80
  6. Step 6: Final answer
    x = 488,273.40

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1.5x scale

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.