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Finding the Fourth Proportional to 489,670.72, 675,757.70 and 274,827.12

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Solution

The fourth proportional to 489,670.72, 675,757.70 and 274,827.12 is: 379,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,670.72 : 675,757.70 = 274,827.12 : x
  2. Step 2: Convert to fraction form
    489,670.72/675,757.70 = 274,827.12/x
  3. Step 3: Cross multiply
    489,670.72x = 675,757.70 × 274,827.12
  4. Step 4: Simplify right side
    489,670.72x = 185,716,542,508.82
  5. Step 5: Solve for x
    x = 185,716,542,508.82/489,670.72
  6. Step 6: Final answer
    x = 379,268.22

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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.