Home / 789,468.55-1,089,465.78-426,891.55

Finding the Fourth Proportional to 789,468.55, 1,089,465.78 and 426,891.55

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Solution

The fourth proportional to 789,468.55, 1,089,465.78 and 426,891.55 is: 589,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,468.55 : 1,089,465.78 = 426,891.55 : x
  2. Step 2: Convert to fraction form
    789,468.55/1,089,465.78 = 426,891.55/x
  3. Step 3: Cross multiply
    789,468.55x = 1,089,465.78 × 426,891.55
  4. Step 4: Simplify right side
    789,468.55x = 465,083,735,496.16
  5. Step 5: Solve for x
    x = 465,083,735,496.16/789,468.55
  6. Step 6: Final answer
    x = 589,109.90

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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.