Home / 1,012,857.28-1,397,719.20-560,138.56

Finding the Fourth Proportional to 1,012,857.28, 1,397,719.20 and 560,138.56

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Solution

The fourth proportional to 1,012,857.28, 1,397,719.20 and 560,138.56 is: 772,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,857.28 : 1,397,719.20 = 560,138.56 : x
  2. Step 2: Convert to fraction form
    1,012,857.28/1,397,719.20 = 560,138.56/x
  3. Step 3: Cross multiply
    1,012,857.28x = 1,397,719.20 × 560,138.56
  4. Step 4: Simplify right side
    1,012,857.28x = 782,916,419,972.35
  5. Step 5: Solve for x
    x = 782,916,419,972.35/1,012,857.28
  6. Step 6: Final answer
    x = 772,978.03

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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.