Home / 1,433,684.87-1,978,469.87-789,091.21

Finding the Fourth Proportional to 1,433,684.87, 1,978,469.87 and 789,091.21

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Solution

The fourth proportional to 1,433,684.87, 1,978,469.87 and 789,091.21 is: 1,088,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,684.87 : 1,978,469.87 = 789,091.21 : x
  2. Step 2: Convert to fraction form
    1,433,684.87/1,978,469.87 = 789,091.21/x
  3. Step 3: Cross multiply
    1,433,684.87x = 1,978,469.87 × 789,091.21
  4. Step 4: Simplify right side
    1,433,684.87x = 1,561,193,183,666.84
  5. Step 5: Solve for x
    x = 1,561,193,183,666.84/1,433,684.87
  6. Step 6: Final answer
    x = 1,088,937.48

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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.