Home / 726,717.40-1,089,687.30-253,418.20

Finding the Fourth Proportional to 726,717.40, 1,089,687.30 and 253,418.20

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Solution

The fourth proportional to 726,717.40, 1,089,687.30 and 253,418.20 is: 379,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,717.40 : 1,089,687.30 = 253,418.20 : x
  2. Step 2: Convert to fraction form
    726,717.40/1,089,687.30 = 253,418.20/x
  3. Step 3: Cross multiply
    726,717.40x = 1,089,687.30 × 253,418.20
  4. Step 4: Simplify right side
    726,717.40x = 276,146,594,128.86
  5. Step 5: Solve for x
    x = 276,146,594,128.86/726,717.40
  6. Step 6: Final answer
    x = 379,991.72

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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.