Home / 979,620.80-1,469,431.20-269,758.40

Finding the Fourth Proportional to 979,620.80, 1,469,431.20 and 269,758.40

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Solution

The fourth proportional to 979,620.80, 1,469,431.20 and 269,758.40 is: 404,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,620.80 : 1,469,431.20 = 269,758.40 : x
  2. Step 2: Convert to fraction form
    979,620.80/1,469,431.20 = 269,758.40/x
  3. Step 3: Cross multiply
    979,620.80x = 1,469,431.20 × 269,758.40
  4. Step 4: Simplify right side
    979,620.80x = 396,391,409,422.08
  5. Step 5: Solve for x
    x = 396,391,409,422.08/979,620.80
  6. Step 6: Final answer
    x = 404,637.60

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Similar ratio
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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.