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Finding the Fourth Proportional to 489,695.21, 675,845.33 and 274,847.03

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Solution

The fourth proportional to 489,695.21, 675,845.33 and 274,847.03 is: 379,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,695.21 : 675,845.33 = 274,847.03 : x
  2. Step 2: Convert to fraction form
    489,695.21/675,845.33 = 274,847.03/x
  3. Step 3: Cross multiply
    489,695.21x = 675,845.33 × 274,847.03
  4. Step 4: Simplify right side
    489,695.21x = 185,754,081,689.87
  5. Step 5: Solve for x
    x = 185,754,081,689.87/489,695.21
  6. Step 6: Final answer
    x = 379,325.91

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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.