Home / 2,800,266.30-4,200,399.45-2,128,419.90

Finding the Fourth Proportional to 2,800,266.30, 4,200,399.45 and 2,128,419.90

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Solution

The fourth proportional to 2,800,266.30, 4,200,399.45 and 2,128,419.90 is: 3,192,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,266.30 : 4,200,399.45 = 2,128,419.90 : x
  2. Step 2: Convert to fraction form
    2,800,266.30/4,200,399.45 = 2,128,419.90/x
  3. Step 3: Cross multiply
    2,800,266.30x = 4,200,399.45 × 2,128,419.90
  4. Step 4: Simplify right side
    2,800,266.30x = 8,940,213,777,329.06
  5. Step 5: Solve for x
    x = 8,940,213,777,329.06/2,800,266.30
  6. Step 6: Final answer
    x = 3,192,629.85

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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.