Home / 726,489.97-1,089,900.81-221,122.58

Finding the Fourth Proportional to 726,489.97, 1,089,900.81 and 221,122.58

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Solution

The fourth proportional to 726,489.97, 1,089,900.81 and 221,122.58 is: 331,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,489.97 : 1,089,900.81 = 221,122.58 : x
  2. Step 2: Convert to fraction form
    726,489.97/1,089,900.81 = 221,122.58/x
  3. Step 3: Cross multiply
    726,489.97x = 1,089,900.81 × 221,122.58
  4. Step 4: Simplify right side
    726,489.97x = 241,001,673,601.79
  5. Step 5: Solve for x
    x = 241,001,673,601.79/726,489.97
  6. Step 6: Final answer
    x = 331,734.35

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1.5x scale

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.