Home / 726,505.20-1,089,798.80-221,082.68

Finding the Fourth Proportional to 726,505.20, 1,089,798.80 and 221,082.68

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Solution

The fourth proportional to 726,505.20, 1,089,798.80 and 221,082.68 is: 331,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,505.20 : 1,089,798.80 = 221,082.68 : x
  2. Step 2: Convert to fraction form
    726,505.20/1,089,798.80 = 221,082.68/x
  3. Step 3: Cross multiply
    726,505.20x = 1,089,798.80 × 221,082.68
  4. Step 4: Simplify right side
    726,505.20x = 240,935,639,364.78
  5. Step 5: Solve for x
    x = 240,935,639,364.78/726,505.20
  6. Step 6: Final answer
    x = 331,636.50

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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.