Home / 1,114,780,155.28-1,538,309,469-619,712,717.20

Finding the Fourth Proportional to 1,114,780,155.28, 1,538,309,469 and 619,712,717.20

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Solution

The fourth proportional to 1,114,780,155.28, 1,538,309,469 and 619,712,717.20 is: 855,155,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114,780,155.28 : 1,538,309,469 = 619,712,717.20 : x
  2. Step 2: Convert to fraction form
    1,114,780,155.28/1,538,309,469 = 619,712,717.20/x
  3. Step 3: Cross multiply
    1,114,780,155.28x = 1,538,309,469 × 619,712,717.20
  4. Step 4: Simplify right side
    1,114,780,155.28x = 953,309,940,928,479,232
  5. Step 5: Solve for x
    x = 953,309,940,928,479,232/1,114,780,155.28
  6. Step 6: Final answer
    x = 855,155,105.17

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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.