Home / 1,434,138.11-1,979,035.43-789,432.38

Finding the Fourth Proportional to 1,434,138.11, 1,979,035.43 and 789,432.38

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Solution

The fourth proportional to 1,434,138.11, 1,979,035.43 and 789,432.38 is: 1,089,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,138.11 : 1,979,035.43 = 789,432.38 : x
  2. Step 2: Convert to fraction form
    1,434,138.11/1,979,035.43 = 789,432.38/x
  3. Step 3: Cross multiply
    1,434,138.11x = 1,979,035.43 × 789,432.38
  4. Step 4: Simplify right side
    1,434,138.11x = 1,562,314,649,609.22
  5. Step 5: Solve for x
    x = 1,562,314,649,609.22/1,434,138.11
  6. Step 6: Final answer
    x = 1,089,375.31

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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.