Home / 726,005.20-1,089,306.96-320,984.38

Finding the Fourth Proportional to 726,005.20, 1,089,306.96 and 320,984.38

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Solution

The fourth proportional to 726,005.20, 1,089,306.96 and 320,984.38 is: 481,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,005.20 : 1,089,306.96 = 320,984.38 : x
  2. Step 2: Convert to fraction form
    726,005.20/1,089,306.96 = 320,984.38/x
  3. Step 3: Cross multiply
    726,005.20x = 1,089,306.96 × 320,984.38
  4. Step 4: Simplify right side
    726,005.20x = 349,650,519,185.29
  5. Step 5: Solve for x
    x = 349,650,519,185.29/726,005.20
  6. Step 6: Final answer
    x = 481,608.84

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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.