Home / 729,768.90-1,093,669.20-489,198.90

Finding the Fourth Proportional to 729,768.90, 1,093,669.20 and 489,198.90

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Solution

The fourth proportional to 729,768.90, 1,093,669.20 and 489,198.90 is: 733,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,768.90 : 1,093,669.20 = 489,198.90 : x
  2. Step 2: Convert to fraction form
    729,768.90/1,093,669.20 = 489,198.90/x
  3. Step 3: Cross multiply
    729,768.90x = 1,093,669.20 × 489,198.90
  4. Step 4: Simplify right side
    729,768.90x = 535,021,769,603.88
  5. Step 5: Solve for x
    x = 535,021,769,603.88/729,768.90
  6. Step 6: Final answer
    x = 733,138.63

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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.