Home / 687,023.88-948,206.66-381,198.79

Finding the Fourth Proportional to 687,023.88, 948,206.66 and 381,198.79

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Solution

The fourth proportional to 687,023.88, 948,206.66 and 381,198.79 is: 526,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,023.88 : 948,206.66 = 381,198.79 : x
  2. Step 2: Convert to fraction form
    687,023.88/948,206.66 = 381,198.79/x
  3. Step 3: Cross multiply
    687,023.88x = 948,206.66 × 381,198.79
  4. Step 4: Simplify right side
    687,023.88x = 361,455,231,107.56
  5. Step 5: Solve for x
    x = 361,455,231,107.56/687,023.88
  6. Step 6: Final answer
    x = 526,117.42

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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.