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Finding the Fourth Proportional to 490,953.53, 677,509.40 and 276,093.53

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Solution

The fourth proportional to 490,953.53, 677,509.40 and 276,093.53 is: 381,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,953.53 : 677,509.40 = 276,093.53 : x
  2. Step 2: Convert to fraction form
    490,953.53/677,509.40 = 276,093.53/x
  3. Step 3: Cross multiply
    490,953.53x = 677,509.40 × 276,093.53
  4. Step 4: Simplify right side
    490,953.53x = 187,055,957,086.17
  5. Step 5: Solve for x
    x = 187,055,957,086.17/490,953.53
  6. Step 6: Final answer
    x = 381,005.43

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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.