Home / 726,288.80-1,089,433.20-353,040.80

Finding the Fourth Proportional to 726,288.80, 1,089,433.20 and 353,040.80

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Solution

The fourth proportional to 726,288.80, 1,089,433.20 and 353,040.80 is: 529,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,288.80 : 1,089,433.20 = 353,040.80 : x
  2. Step 2: Convert to fraction form
    726,288.80/1,089,433.20 = 353,040.80/x
  3. Step 3: Cross multiply
    726,288.80x = 1,089,433.20 × 353,040.80
  4. Step 4: Simplify right side
    726,288.80x = 384,614,368,474.56
  5. Step 5: Solve for x
    x = 384,614,368,474.56/726,288.80
  6. Step 6: Final answer
    x = 529,561.20

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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.