Home / 728,471.90-1,092,084.78-279,514.94

Finding the Fourth Proportional to 728,471.90, 1,092,084.78 and 279,514.94

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Solution

The fourth proportional to 728,471.90, 1,092,084.78 and 279,514.94 is: 419,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,471.90 : 1,092,084.78 = 279,514.94 : x
  2. Step 2: Convert to fraction form
    728,471.90/1,092,084.78 = 279,514.94/x
  3. Step 3: Cross multiply
    728,471.90x = 1,092,084.78 × 279,514.94
  4. Step 4: Simplify right side
    728,471.90x = 305,254,011,756.61
  5. Step 5: Solve for x
    x = 305,254,011,756.61/728,471.90
  6. Step 6: Final answer
    x = 419,033.34

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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.