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Finding the Fourth Proportional to 490,382.91, 676,728.99 and 275,522.85

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Solution

The fourth proportional to 490,382.91, 676,728.99 and 275,522.85 is: 380,221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,382.91 : 676,728.99 = 275,522.85 : x
  2. Step 2: Convert to fraction form
    490,382.91/676,728.99 = 275,522.85/x
  3. Step 3: Cross multiply
    490,382.91x = 676,728.99 × 275,522.85
  4. Step 4: Simplify right side
    490,382.91x = 186,454,300,002.42
  5. Step 5: Solve for x
    x = 186,454,300,002.42/490,382.91
  6. Step 6: Final answer
    x = 380,221.86

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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.