Home / 818,815.87-1,228,054.38-219,634.57

Finding the Fourth Proportional to 818,815.87, 1,228,054.38 and 219,634.57

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Solution

The fourth proportional to 818,815.87, 1,228,054.38 and 219,634.57 is: 329,406.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,815.87 : 1,228,054.38 = 219,634.57 : x
  2. Step 2: Convert to fraction form
    818,815.87/1,228,054.38 = 219,634.57/x
  3. Step 3: Cross multiply
    818,815.87x = 1,228,054.38 × 219,634.57
  4. Step 4: Simplify right side
    818,815.87x = 269,723,195,687.92
  5. Step 5: Solve for x
    x = 269,723,195,687.92/818,815.87
  6. Step 6: Final answer
    x = 329,406.41

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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.