Home / 1,433,737.80-1,978,542.51-789,144.12

Finding the Fourth Proportional to 1,433,737.80, 1,978,542.51 and 789,144.12

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Solution

The fourth proportional to 1,433,737.80, 1,978,542.51 and 789,144.12 is: 1,089,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,737.80 : 1,978,542.51 = 789,144.12 : x
  2. Step 2: Convert to fraction form
    1,433,737.80/1,978,542.51 = 789,144.12/x
  3. Step 3: Cross multiply
    1,433,737.80x = 1,978,542.51 × 789,144.12
  4. Step 4: Simplify right side
    1,433,737.80x = 1,561,355,187,936.54
  5. Step 5: Solve for x
    x = 1,561,355,187,936.54/1,433,737.80
  6. Step 6: Final answer
    x = 1,089,010.27

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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.