Home / 718,791.15-991,919.48-396,532.11

Finding the Fourth Proportional to 718,791.15, 991,919.48 and 396,532.11

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Solution

The fourth proportional to 718,791.15, 991,919.48 and 396,532.11 is: 547,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,791.15 : 991,919.48 = 396,532.11 : x
  2. Step 2: Convert to fraction form
    718,791.15/991,919.48 = 396,532.11/x
  3. Step 3: Cross multiply
    718,791.15x = 991,919.48 × 396,532.11
  4. Step 4: Simplify right side
    718,791.15x = 393,327,922,371.84
  5. Step 5: Solve for x
    x = 393,327,922,371.84/718,791.15
  6. Step 6: Final answer
    x = 547,207.52

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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.