Home / 789,772.15-1,089,885.71-427,195.90

Finding the Fourth Proportional to 789,772.15, 1,089,885.71 and 427,195.90

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Solution

The fourth proportional to 789,772.15, 1,089,885.71 and 427,195.90 is: 589,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,772.15 : 1,089,885.71 = 427,195.90 : x
  2. Step 2: Convert to fraction form
    789,772.15/1,089,885.71 = 427,195.90/x
  3. Step 3: Cross multiply
    789,772.15x = 1,089,885.71 × 427,195.90
  4. Step 4: Simplify right side
    789,772.15x = 465,594,706,780.59
  5. Step 5: Solve for x
    x = 465,594,706,780.59/789,772.15
  6. Step 6: Final answer
    x = 589,530.42

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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.