Home / 726,528-1,089,832.92-221,105.40

Finding the Fourth Proportional to 726,528, 1,089,832.92 and 221,105.40

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Solution

The fourth proportional to 726,528, 1,089,832.92 and 221,105.40 is: 331,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,528 : 1,089,832.92 = 221,105.40 : x
  2. Step 2: Convert to fraction form
    726,528/1,089,832.92 = 221,105.40/x
  3. Step 3: Cross multiply
    726,528x = 1,089,832.92 × 221,105.40
  4. Step 4: Simplify right side
    726,528x = 240,967,943,709.77
  5. Step 5: Solve for x
    x = 240,967,943,709.77/726,528
  6. Step 6: Final answer
    x = 331,670.55

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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.