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Finding the Fourth Proportional to 449,600.80, 674,401.20 and 394,304.80

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Solution

The fourth proportional to 449,600.80, 674,401.20 and 394,304.80 is: 591,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,600.80 : 674,401.20 = 394,304.80 : x
  2. Step 2: Convert to fraction form
    449,600.80/674,401.20 = 394,304.80/x
  3. Step 3: Cross multiply
    449,600.80x = 674,401.20 × 394,304.80
  4. Step 4: Simplify right side
    449,600.80x = 265,919,630,285.76
  5. Step 5: Solve for x
    x = 265,919,630,285.76/449,600.80
  6. Step 6: Final answer
    x = 591,457.20

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Similar ratio
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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.