Home / 789,452.60-1,089,378.79-445,269.56

Finding the Fourth Proportional to 789,452.60, 1,089,378.79 and 445,269.56

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Solution

The fourth proportional to 789,452.60, 1,089,378.79 and 445,269.56 is: 614,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,452.60 : 1,089,378.79 = 445,269.56 : x
  2. Step 2: Convert to fraction form
    789,452.60/1,089,378.79 = 445,269.56/x
  3. Step 3: Cross multiply
    789,452.60x = 1,089,378.79 × 445,269.56
  4. Step 4: Simplify right side
    789,452.60x = 485,067,207,936.57
  5. Step 5: Solve for x
    x = 485,067,207,936.57/789,452.60
  6. Step 6: Final answer
    x = 614,434.88

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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.