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Finding the Fourth Proportional to 404,321.10, 606,481.65 and 279,905.10

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Solution

The fourth proportional to 404,321.10, 606,481.65 and 279,905.10 is: 419,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,321.10 : 606,481.65 = 279,905.10 : x
  2. Step 2: Convert to fraction form
    404,321.10/606,481.65 = 279,905.10/x
  3. Step 3: Cross multiply
    404,321.10x = 606,481.65 × 279,905.10
  4. Step 4: Simplify right side
    404,321.10x = 169,757,306,891.42
  5. Step 5: Solve for x
    x = 169,757,306,891.42/404,321.10
  6. Step 6: Final answer
    x = 419,857.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.