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Finding the Fourth Proportional to 490,974.74, 677,571.94 and 276,127.50

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Solution

The fourth proportional to 490,974.74, 677,571.94 and 276,127.50 is: 381,071.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,974.74 : 677,571.94 = 276,127.50 : x
  2. Step 2: Convert to fraction form
    490,974.74/677,571.94 = 276,127.50/x
  3. Step 3: Cross multiply
    490,974.74x = 677,571.94 × 276,127.50
  4. Step 4: Simplify right side
    490,974.74x = 187,096,245,862.35
  5. Step 5: Solve for x
    x = 187,096,245,862.35/490,974.74
  6. Step 6: Final answer
    x = 381,071.02

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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.