Home / 481,539.20-664,634.64-320,401.04

Finding the Fourth Proportional to 481,539.20, 664,634.64 and 320,401.04

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Solution

The fourth proportional to 481,539.20, 664,634.64 and 320,401.04 is: 442,226.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,539.20 : 664,634.64 = 320,401.04 : x
  2. Step 2: Convert to fraction form
    481,539.20/664,634.64 = 320,401.04/x
  3. Step 3: Cross multiply
    481,539.20x = 664,634.64 × 320,401.04
  4. Step 4: Simplify right side
    481,539.20x = 212,949,629,876.03
  5. Step 5: Solve for x
    x = 212,949,629,876.03/481,539.20
  6. Step 6: Final answer
    x = 442,226.99

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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.