Home / 812,380.46-1,120,994.52-449,713.49

Finding the Fourth Proportional to 812,380.46, 1,120,994.52 and 449,713.49

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Solution

The fourth proportional to 812,380.46, 1,120,994.52 and 449,713.49 is: 620,554.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,380.46 : 1,120,994.52 = 449,713.49 : x
  2. Step 2: Convert to fraction form
    812,380.46/1,120,994.52 = 449,713.49/x
  3. Step 3: Cross multiply
    812,380.46x = 1,120,994.52 × 449,713.49
  4. Step 4: Simplify right side
    812,380.46x = 504,126,361,608.08
  5. Step 5: Solve for x
    x = 504,126,361,608.08/812,380.46
  6. Step 6: Final answer
    x = 620,554.52

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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.