Home / 726,539.38-1,089,850.02-221,116.84

Finding the Fourth Proportional to 726,539.38, 1,089,850.02 and 221,116.84

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Solution

The fourth proportional to 726,539.38, 1,089,850.02 and 221,116.84 is: 331,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,539.38 : 1,089,850.02 = 221,116.84 : x
  2. Step 2: Convert to fraction form
    726,539.38/1,089,850.02 = 221,116.84/x
  3. Step 3: Cross multiply
    726,539.38x = 1,089,850.02 × 221,116.84
  4. Step 4: Simplify right side
    726,539.38x = 240,984,192,496.34
  5. Step 5: Solve for x
    x = 240,984,192,496.34/726,539.38
  6. Step 6: Final answer
    x = 331,687.72

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Double scale
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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.