Home / 764,070.90-1,145,958.12-726,138.60

Finding the Fourth Proportional to 764,070.90, 1,145,958.12 and 726,138.60

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Solution

The fourth proportional to 764,070.90, 1,145,958.12 and 726,138.60 is: 1,089,067.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,070.90 : 1,145,958.12 = 726,138.60 : x
  2. Step 2: Convert to fraction form
    764,070.90/1,145,958.12 = 726,138.60/x
  3. Step 3: Cross multiply
    764,070.90x = 1,145,958.12 × 726,138.60
  4. Step 4: Simplify right side
    764,070.90x = 832,124,424,915.43
  5. Step 5: Solve for x
    x = 832,124,424,915.43/764,070.90
  6. Step 6: Final answer
    x = 1,089,067.03

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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.