Home / 726,728.40-1,090,481.40-306,046.80

Finding the Fourth Proportional to 726,728.40, 1,090,481.40 and 306,046.80

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Solution

The fourth proportional to 726,728.40, 1,090,481.40 and 306,046.80 is: 459,233.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,728.40 : 1,090,481.40 = 306,046.80 : x
  2. Step 2: Convert to fraction form
    726,728.40/1,090,481.40 = 306,046.80/x
  3. Step 3: Cross multiply
    726,728.40x = 1,090,481.40 × 306,046.80
  4. Step 4: Simplify right side
    726,728.40x = 333,738,342,929.52
  5. Step 5: Solve for x
    x = 333,738,342,929.52/726,728.40
  6. Step 6: Final answer
    x = 459,233.94

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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.