Home / 726,821.40-1,089,843.30-305,621.40

Finding the Fourth Proportional to 726,821.40, 1,089,843.30 and 305,621.40

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Solution

The fourth proportional to 726,821.40, 1,089,843.30 and 305,621.40 is: 458,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,821.40 : 1,089,843.30 = 305,621.40 : x
  2. Step 2: Convert to fraction form
    726,821.40/1,089,843.30 = 305,621.40/x
  3. Step 3: Cross multiply
    726,821.40x = 1,089,843.30 × 305,621.40
  4. Step 4: Simplify right side
    726,821.40x = 333,079,435,126.62
  5. Step 5: Solve for x
    x = 333,079,435,126.62/726,821.40
  6. Step 6: Final answer
    x = 458,268.61

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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.