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Finding the Fourth Proportional to 490,517.46, 676,974.21 and 275,666.58

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Solution

The fourth proportional to 490,517.46, 676,974.21 and 275,666.58 is: 380,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,517.46 : 676,974.21 = 275,666.58 : x
  2. Step 2: Convert to fraction form
    490,517.46/676,974.21 = 275,666.58/x
  3. Step 3: Cross multiply
    490,517.46x = 676,974.21 × 275,666.58
  4. Step 4: Simplify right side
    490,517.46x = 186,619,165,218.90
  5. Step 5: Solve for x
    x = 186,619,165,218.90/490,517.46
  6. Step 6: Final answer
    x = 380,453.66

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1.5x scale

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.