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Finding the Fourth Proportional to 490,244.20, 734,843.10 and 279,428.20

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Solution

The fourth proportional to 490,244.20, 734,843.10 and 279,428.20 is: 418,844.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,244.20 : 734,843.10 = 279,428.20 : x
  2. Step 2: Convert to fraction form
    490,244.20/734,843.10 = 279,428.20/x
  3. Step 3: Cross multiply
    490,244.20x = 734,843.10 × 279,428.20
  4. Step 4: Simplify right side
    490,244.20x = 205,335,884,715.42
  5. Step 5: Solve for x
    x = 205,335,884,715.42/490,244.20
  6. Step 6: Final answer
    x = 418,844.09

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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.