Home / 789,451.72-1,089,377.52-445,268.68

Finding the Fourth Proportional to 789,451.72, 1,089,377.52 and 445,268.68

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Solution

The fourth proportional to 789,451.72, 1,089,377.52 and 445,268.68 is: 614,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,451.72 : 1,089,377.52 = 445,268.68 : x
  2. Step 2: Convert to fraction form
    789,451.72/1,089,377.52 = 445,268.68/x
  3. Step 3: Cross multiply
    789,451.72x = 1,089,377.52 × 445,268.68
  4. Step 4: Simplify right side
    789,451.72x = 485,065,690,352.07
  5. Step 5: Solve for x
    x = 485,065,690,352.07/789,451.72
  6. Step 6: Final answer
    x = 614,433.64

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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.