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Finding the Fourth Proportional to 489,833.78, 675,970.29 and 274,974.26

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Solution

The fourth proportional to 489,833.78, 675,970.29 and 274,974.26 is: 379,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,833.78 : 675,970.29 = 274,974.26 : x
  2. Step 2: Convert to fraction form
    489,833.78/675,970.29 = 274,974.26/x
  3. Step 3: Cross multiply
    489,833.78x = 675,970.29 × 274,974.26
  4. Step 4: Simplify right side
    489,833.78x = 185,874,430,274.74
  5. Step 5: Solve for x
    x = 185,874,430,274.74/489,833.78
  6. Step 6: Final answer
    x = 379,464.30

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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.