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Finding the Fourth Proportional to 489,797.64, 675,923.40 and 274,940.28

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Solution

The fourth proportional to 489,797.64, 675,923.40 and 274,940.28 is: 379,419.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,797.64 : 675,923.40 = 274,940.28 : x
  2. Step 2: Convert to fraction form
    489,797.64/675,923.40 = 274,940.28/x
  3. Step 3: Cross multiply
    489,797.64x = 675,923.40 × 274,940.28
  4. Step 4: Simplify right side
    489,797.64x = 185,838,568,854.55
  5. Step 5: Solve for x
    x = 185,838,568,854.55/489,797.64
  6. Step 6: Final answer
    x = 379,419.08

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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.