Home / 789,218.62-1,089,120.21-426,642.70

Finding the Fourth Proportional to 789,218.62, 1,089,120.21 and 426,642.70

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Solution

The fourth proportional to 789,218.62, 1,089,120.21 and 426,642.70 is: 588,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,218.62 : 1,089,120.21 = 426,642.70 : x
  2. Step 2: Convert to fraction form
    789,218.62/1,089,120.21 = 426,642.70/x
  3. Step 3: Cross multiply
    789,218.62x = 1,089,120.21 × 426,642.70
  4. Step 4: Simplify right side
    789,218.62x = 464,665,187,018.97
  5. Step 5: Solve for x
    x = 464,665,187,018.97/789,218.62
  6. Step 6: Final answer
    x = 588,766.12

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Double scale
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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.