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Finding the Fourth Proportional to 489,661.22, 675,744.57 and 274,817.62

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Solution

The fourth proportional to 489,661.22, 675,744.57 and 274,817.62 is: 379,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,661.22 : 675,744.57 = 274,817.62 : x
  2. Step 2: Convert to fraction form
    489,661.22/675,744.57 = 274,817.62/x
  3. Step 3: Cross multiply
    489,661.22x = 675,744.57 × 274,817.62
  4. Step 4: Simplify right side
    489,661.22x = 185,706,514,455.32
  5. Step 5: Solve for x
    x = 185,706,514,455.32/489,661.22
  6. Step 6: Final answer
    x = 379,255.10

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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.