Home / 789,647.75-1,089,847.89-445,581.21

Finding the Fourth Proportional to 789,647.75, 1,089,847.89 and 445,581.21

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Solution

The fourth proportional to 789,647.75, 1,089,847.89 and 445,581.21 is: 614,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,647.75 : 1,089,847.89 = 445,581.21 : x
  2. Step 2: Convert to fraction form
    789,647.75/1,089,847.89 = 445,581.21/x
  3. Step 3: Cross multiply
    789,647.75x = 1,089,847.89 × 445,581.21
  4. Step 4: Simplify right side
    789,647.75x = 485,615,741,542.15
  5. Step 5: Solve for x
    x = 485,615,741,542.15/789,647.75
  6. Step 6: Final answer
    x = 614,977.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.