Home / 1,433,881.72-1,978,813.20-789,361.89

Finding the Fourth Proportional to 1,433,881.72, 1,978,813.20 and 789,361.89

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Solution

The fourth proportional to 1,433,881.72, 1,978,813.20 and 789,361.89 is: 1,089,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,881.72 : 1,978,813.20 = 789,361.89 : x
  2. Step 2: Convert to fraction form
    1,433,881.72/1,978,813.20 = 789,361.89/x
  3. Step 3: Cross multiply
    1,433,881.72x = 1,978,813.20 × 789,361.89
  4. Step 4: Simplify right side
    1,433,881.72x = 1,561,999,727,508.95
  5. Step 5: Solve for x
    x = 1,561,999,727,508.95/1,433,881.72
  6. Step 6: Final answer
    x = 1,089,350.47

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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.