Home / 789,683.22-1,089,759.60-427,107.48

Finding the Fourth Proportional to 789,683.22, 1,089,759.60 and 427,107.48

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Solution

The fourth proportional to 789,683.22, 1,089,759.60 and 427,107.48 is: 589,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,683.22 : 1,089,759.60 = 427,107.48 : x
  2. Step 2: Convert to fraction form
    789,683.22/1,089,759.60 = 427,107.48/x
  3. Step 3: Cross multiply
    789,683.22x = 1,089,759.60 × 427,107.48
  4. Step 4: Simplify right side
    789,683.22x = 465,444,476,561.81
  5. Step 5: Solve for x
    x = 465,444,476,561.81/789,683.22
  6. Step 6: Final answer
    x = 589,406.57

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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.