Home / 490,694.28-677,672.10-338,129.16

Finding the Fourth Proportional to 490,694.28, 677,672.10 and 338,129.16

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Solution

The fourth proportional to 490,694.28, 677,672.10 and 338,129.16 is: 466,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,694.28 : 677,672.10 = 338,129.16 : x
  2. Step 2: Convert to fraction form
    490,694.28/677,672.10 = 338,129.16/x
  3. Step 3: Cross multiply
    490,694.28x = 677,672.10 × 338,129.16
  4. Step 4: Simplify right side
    490,694.28x = 229,140,697,928.44
  5. Step 5: Solve for x
    x = 229,140,697,928.44/490,694.28
  6. Step 6: Final answer
    x = 466,972.43

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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.