Home / 726,488.81-1,089,899.07-221,121.41

Finding the Fourth Proportional to 726,488.81, 1,089,899.07 and 221,121.41

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Solution

The fourth proportional to 726,488.81, 1,089,899.07 and 221,121.41 is: 331,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,488.81 : 1,089,899.07 = 221,121.41 : x
  2. Step 2: Convert to fraction form
    726,488.81/1,089,899.07 = 221,121.41/x
  3. Step 3: Cross multiply
    726,488.81x = 1,089,899.07 × 221,121.41
  4. Step 4: Simplify right side
    726,488.81x = 241,000,015,285.73
  5. Step 5: Solve for x
    x = 241,000,015,285.73/726,488.81
  6. Step 6: Final answer
    x = 331,732.59

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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.