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Finding the Fourth Proportional to 489,704.19, 675,791.78 and 274,844.25

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Solution

The fourth proportional to 489,704.19, 675,791.78 and 274,844.25 is: 379,285.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,704.19 : 675,791.78 = 274,844.25 : x
  2. Step 2: Convert to fraction form
    489,704.19/675,791.78 = 274,844.25/x
  3. Step 3: Cross multiply
    489,704.19x = 675,791.78 × 274,844.25
  4. Step 4: Simplify right side
    489,704.19x = 185,737,483,715.83
  5. Step 5: Solve for x
    x = 185,737,483,715.83/489,704.19
  6. Step 6: Final answer
    x = 379,285.06

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1.5x scale

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.