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Finding the Fourth Proportional to 489,696.21, 675,846.71 and 274,848.03

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Solution

The fourth proportional to 489,696.21, 675,846.71 and 274,848.03 is: 379,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,696.21 : 675,846.71 = 274,848.03 : x
  2. Step 2: Convert to fraction form
    489,696.21/675,846.71 = 274,848.03/x
  3. Step 3: Cross multiply
    489,696.21x = 675,846.71 × 274,848.03
  4. Step 4: Simplify right side
    489,696.21x = 185,755,136,825.48
  5. Step 5: Solve for x
    x = 185,755,136,825.48/489,696.21
  6. Step 6: Final answer
    x = 379,327.29

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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.