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Finding the Fourth Proportional to 489,753.89, 675,823.29 and 274,852.43

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Solution

The fourth proportional to 489,753.89, 675,823.29 and 274,852.43 is: 379,275.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,753.89 : 675,823.29 = 274,852.43 : x
  2. Step 2: Convert to fraction form
    489,753.89/675,823.29 = 274,852.43/x
  3. Step 3: Cross multiply
    489,753.89x = 675,823.29 × 274,852.43
  4. Step 4: Simplify right side
    489,753.89x = 185,751,670,127.98
  5. Step 5: Solve for x
    x = 185,751,670,127.98/489,753.89
  6. Step 6: Final answer
    x = 379,275.54

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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.