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Finding the Fourth Proportional to 481,428.02, 721,872.06 and 329,796.42

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Solution

The fourth proportional to 481,428.02, 721,872.06 and 329,796.42 is: 494,509.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,428.02 : 721,872.06 = 329,796.42 : x
  2. Step 2: Convert to fraction form
    481,428.02/721,872.06 = 329,796.42/x
  3. Step 3: Cross multiply
    481,428.02x = 721,872.06 × 329,796.42
  4. Step 4: Simplify right side
    481,428.02x = 238,070,821,086.03
  5. Step 5: Solve for x
    x = 238,070,821,086.03/481,428.02
  6. Step 6: Final answer
    x = 494,509.69

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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.