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Finding the Fourth Proportional to 490,921.52, 677,467.44 and 276,057

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Solution

The fourth proportional to 490,921.52, 677,467.44 and 276,057 is: 380,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,921.52 : 677,467.44 = 276,057 : x
  2. Step 2: Convert to fraction form
    490,921.52/677,467.44 = 276,057/x
  3. Step 3: Cross multiply
    490,921.52x = 677,467.44 × 276,057
  4. Step 4: Simplify right side
    490,921.52x = 187,019,629,084.08
  5. Step 5: Solve for x
    x = 187,019,629,084.08/490,921.52
  6. Step 6: Final answer
    x = 380,956.27

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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.