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Finding the Fourth Proportional to 483,700.80, 724,676.40 and 394,471.20

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Solution

The fourth proportional to 483,700.80, 724,676.40 and 394,471.20 is: 590,993.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,700.80 : 724,676.40 = 394,471.20 : x
  2. Step 2: Convert to fraction form
    483,700.80/724,676.40 = 394,471.20/x
  3. Step 3: Cross multiply
    483,700.80x = 724,676.40 × 394,471.20
  4. Step 4: Simplify right side
    483,700.80x = 285,863,969,119.68
  5. Step 5: Solve for x
    x = 285,863,969,119.68/483,700.80
  6. Step 6: Final answer
    x = 590,993.38

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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.