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Finding the Fourth Proportional to 721,294.56, 1,082,040.24 and 300,472

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Solution

The fourth proportional to 721,294.56, 1,082,040.24 and 300,472 is: 450,748.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,294.56 : 1,082,040.24 = 300,472 : x
  2. Step 2: Convert to fraction form
    721,294.56/1,082,040.24 = 300,472/x
  3. Step 3: Cross multiply
    721,294.56x = 1,082,040.24 × 300,472
  4. Step 4: Simplify right side
    721,294.56x = 325,122,794,993.28
  5. Step 5: Solve for x
    x = 325,122,794,993.28/721,294.56
  6. Step 6: Final answer
    x = 450,748.99

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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.