Home / 821,519.66-1,231,177.96-639,370.39

Finding the Fourth Proportional to 821,519.66, 1,231,177.96 and 639,370.39

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Solution

The fourth proportional to 821,519.66, 1,231,177.96 and 639,370.39 is: 958,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,519.66 : 1,231,177.96 = 639,370.39 : x
  2. Step 2: Convert to fraction form
    821,519.66/1,231,177.96 = 639,370.39/x
  3. Step 3: Cross multiply
    821,519.66x = 1,231,177.96 × 639,370.39
  4. Step 4: Simplify right side
    821,519.66x = 787,178,734,929.48
  5. Step 5: Solve for x
    x = 787,178,734,929.48/821,519.66
  6. Step 6: Final answer
    x = 958,198.29

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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.