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Finding the Fourth Proportional to 485,296.88, 728,463.72 and 275,344.88

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Solution

The fourth proportional to 485,296.88, 728,463.72 and 275,344.88 is: 413,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,296.88 : 728,463.72 = 275,344.88 : x
  2. Step 2: Convert to fraction form
    485,296.88/728,463.72 = 275,344.88/x
  3. Step 3: Cross multiply
    485,296.88x = 728,463.72 × 275,344.88
  4. Step 4: Simplify right side
    485,296.88x = 200,578,755,567.75
  5. Step 5: Solve for x
    x = 200,578,755,567.75/485,296.88
  6. Step 6: Final answer
    x = 413,311.45

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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.