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Finding the Fourth Proportional to 490,896.22, 677,440.83 and 276,034.41

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Solution

The fourth proportional to 490,896.22, 677,440.83 and 276,034.41 is: 380,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,896.22 : 677,440.83 = 276,034.41 : x
  2. Step 2: Convert to fraction form
    490,896.22/677,440.83 = 276,034.41/x
  3. Step 3: Cross multiply
    490,896.22x = 677,440.83 × 276,034.41
  4. Step 4: Simplify right side
    490,896.22x = 186,996,979,818.96
  5. Step 5: Solve for x
    x = 186,996,979,818.96/490,896.22
  6. Step 6: Final answer
    x = 380,929.76

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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.