Home / 2,111,921.28-3,168,198.05-764,399.16

Finding the Fourth Proportional to 2,111,921.28, 3,168,198.05 and 764,399.16

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Solution

The fourth proportional to 2,111,921.28, 3,168,198.05 and 764,399.16 is: 1,146,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111,921.28 : 3,168,198.05 = 764,399.16 : x
  2. Step 2: Convert to fraction form
    2,111,921.28/3,168,198.05 = 764,399.16/x
  3. Step 3: Cross multiply
    2,111,921.28x = 3,168,198.05 × 764,399.16
  4. Step 4: Simplify right side
    2,111,921.28x = 2,421,767,928,133.64
  5. Step 5: Solve for x
    x = 2,421,767,928,133.64/2,111,921.28
  6. Step 6: Final answer
    x = 1,146,713.16

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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.