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Finding the Fourth Proportional to 490,345.38, 676,694.04 and 275,481.12

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Solution

The fourth proportional to 490,345.38, 676,694.04 and 275,481.12 is: 380,173.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,345.38 : 676,694.04 = 275,481.12 : x
  2. Step 2: Convert to fraction form
    490,345.38/676,694.04 = 275,481.12/x
  3. Step 3: Cross multiply
    490,345.38x = 676,694.04 × 275,481.12
  4. Step 4: Simplify right side
    490,345.38x = 186,416,432,036.53
  5. Step 5: Solve for x
    x = 186,416,432,036.53/490,345.38
  6. Step 6: Final answer
    x = 380,173.73

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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.