Home / 485,034.94-669,107.55-324,105.76

Finding the Fourth Proportional to 485,034.94, 669,107.55 and 324,105.76

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Solution

The fourth proportional to 485,034.94, 669,107.55 and 324,105.76 is: 447,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,034.94 : 669,107.55 = 324,105.76 : x
  2. Step 2: Convert to fraction form
    485,034.94/669,107.55 = 324,105.76/x
  3. Step 3: Cross multiply
    485,034.94x = 669,107.55 × 324,105.76
  4. Step 4: Simplify right side
    485,034.94x = 216,861,611,014.49
  5. Step 5: Solve for x
    x = 216,861,611,014.49/485,034.94
  6. Step 6: Final answer
    x = 447,105.13

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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.