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Finding the Fourth Proportional to 489,758.72, 675,829.95 and 274,857.26

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Solution

The fourth proportional to 489,758.72, 675,829.95 and 274,857.26 is: 379,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,758.72 : 675,829.95 = 274,857.26 : x
  2. Step 2: Convert to fraction form
    489,758.72/675,829.95 = 274,857.26/x
  3. Step 3: Cross multiply
    489,758.72x = 675,829.95 × 274,857.26
  4. Step 4: Simplify right side
    489,758.72x = 185,756,764,903.79
  5. Step 5: Solve for x
    x = 185,756,764,903.79/489,758.72
  6. Step 6: Final answer
    x = 379,282.20

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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.