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Finding the Fourth Proportional to 728,753, 1,093,693.98 and 505,679.72

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Solution

The fourth proportional to 728,753, 1,093,693.98 and 505,679.72 is: 758,911.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,753 : 1,093,693.98 = 505,679.72 : x
  2. Step 2: Convert to fraction form
    728,753/1,093,693.98 = 505,679.72/x
  3. Step 3: Cross multiply
    728,753x = 1,093,693.98 × 505,679.72
  4. Step 4: Simplify right side
    728,753x = 553,058,865,572.09
  5. Step 5: Solve for x
    x = 553,058,865,572.09/728,753
  6. Step 6: Final answer
    x = 758,911.27

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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.