Home / 726,022.20-1,089,422.10-326,724.60

Finding the Fourth Proportional to 726,022.20, 1,089,422.10 and 326,724.60

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Solution

The fourth proportional to 726,022.20, 1,089,422.10 and 326,724.60 is: 490,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,022.20 : 1,089,422.10 = 326,724.60 : x
  2. Step 2: Convert to fraction form
    726,022.20/1,089,422.10 = 326,724.60/x
  3. Step 3: Cross multiply
    726,022.20x = 1,089,422.10 × 326,724.60
  4. Step 4: Simplify right side
    726,022.20x = 355,940,999,853.66
  5. Step 5: Solve for x
    x = 355,940,999,853.66/726,022.20
  6. Step 6: Final answer
    x = 490,261.87

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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.