Home / 726,501.22-1,089,792.81-221,078.66

Finding the Fourth Proportional to 726,501.22, 1,089,792.81 and 221,078.66

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Solution

The fourth proportional to 726,501.22, 1,089,792.81 and 221,078.66 is: 331,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,501.22 : 1,089,792.81 = 221,078.66 : x
  2. Step 2: Convert to fraction form
    726,501.22/1,089,792.81 = 221,078.66/x
  3. Step 3: Cross multiply
    726,501.22x = 1,089,792.81 × 221,078.66
  4. Step 4: Simplify right side
    726,501.22x = 240,929,936,836.92
  5. Step 5: Solve for x
    x = 240,929,936,836.92/726,501.22
  6. Step 6: Final answer
    x = 331,630.47

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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.