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Finding the Fourth Proportional to 489,744.47, 675,810.28 and 274,843.01

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Solution

The fourth proportional to 489,744.47, 675,810.28 and 274,843.01 is: 379,262.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,744.47 : 675,810.28 = 274,843.01 : x
  2. Step 2: Convert to fraction form
    489,744.47/675,810.28 = 274,843.01/x
  3. Step 3: Cross multiply
    489,744.47x = 675,810.28 × 274,843.01
  4. Step 4: Simplify right side
    489,744.47x = 185,741,731,544.14
  5. Step 5: Solve for x
    x = 185,741,731,544.14/489,744.47
  6. Step 6: Final answer
    x = 379,262.54

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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.