Home / 728,469.90-1,092,081.78-279,512.94

Finding the Fourth Proportional to 728,469.90, 1,092,081.78 and 279,512.94

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Solution

The fourth proportional to 728,469.90, 1,092,081.78 and 279,512.94 is: 419,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,469.90 : 1,092,081.78 = 279,512.94 : x
  2. Step 2: Convert to fraction form
    728,469.90/1,092,081.78 = 279,512.94/x
  3. Step 3: Cross multiply
    728,469.90x = 1,092,081.78 × 279,512.94
  4. Step 4: Simplify right side
    728,469.90x = 305,250,989,048.23
  5. Step 5: Solve for x
    x = 305,250,989,048.23/728,469.90
  6. Step 6: Final answer
    x = 419,030.34

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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.