Home / 3,840,000.20-5,299,184.11-2,121,120.73

Finding the Fourth Proportional to 3,840,000.20, 5,299,184.11 and 2,121,120.73

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Solution

The fourth proportional to 3,840,000.20, 5,299,184.11 and 2,121,120.73 is: 2,927,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840,000.20 : 5,299,184.11 = 2,121,120.73 : x
  2. Step 2: Convert to fraction form
    3,840,000.20/5,299,184.11 = 2,121,120.73/x
  3. Step 3: Cross multiply
    3,840,000.20x = 5,299,184.11 × 2,121,120.73
  4. Step 4: Simplify right side
    3,840,000.20x = 11,240,209,273,105.88
  5. Step 5: Solve for x
    x = 11,240,209,273,105.88/3,840,000.20
  6. Step 6: Final answer
    x = 2,927,137.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.