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Finding the Fourth Proportional to 483,679.80, 724,644.90 and 394,450.20

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Solution

The fourth proportional to 483,679.80, 724,644.90 and 394,450.20 is: 590,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,679.80 : 724,644.90 = 394,450.20 : x
  2. Step 2: Convert to fraction form
    483,679.80/724,644.90 = 394,450.20/x
  3. Step 3: Cross multiply
    483,679.80x = 724,644.90 × 394,450.20
  4. Step 4: Simplify right side
    483,679.80x = 285,836,325,733.98
  5. Step 5: Solve for x
    x = 285,836,325,733.98/483,679.80
  6. Step 6: Final answer
    x = 590,961.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.