Home / 3,928,202,989.19-5,428,011,122.56-2,797,209,221.87

Finding the Fourth Proportional to 3,928,202,989.19, 5,428,011,122.56 and 2,797,209,221.87

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Solution

The fourth proportional to 3,928,202,989.19, 5,428,011,122.56 and 2,797,209,221.87 is: 3,865,198,109.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,202,989.19 : 5,428,011,122.56 = 2,797,209,221.87 : x
  2. Step 2: Convert to fraction form
    3,928,202,989.19/5,428,011,122.56 = 2,797,209,221.87/x
  3. Step 3: Cross multiply
    3,928,202,989.19x = 5,428,011,122.56 × 2,797,209,221.87
  4. Step 4: Simplify right side
    3,928,202,989.19x = 15,183,282,768,437,764,096
  5. Step 5: Solve for x
    x = 15,183,282,768,437,764,096/3,928,202,989.19
  6. Step 6: Final answer
    x = 3,865,198,109.73

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Double scale
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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.