Home / 789,214.88-1,089,223.14-445,121.42

Finding the Fourth Proportional to 789,214.88, 1,089,223.14 and 445,121.42

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Solution

The fourth proportional to 789,214.88, 1,089,223.14 and 445,121.42 is: 614,327.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,214.88 : 1,089,223.14 = 445,121.42 : x
  2. Step 2: Convert to fraction form
    789,214.88/1,089,223.14 = 445,121.42/x
  3. Step 3: Cross multiply
    789,214.88x = 1,089,223.14 × 445,121.42
  4. Step 4: Simplify right side
    789,214.88x = 484,836,545,327.54
  5. Step 5: Solve for x
    x = 484,836,545,327.54/789,214.88
  6. Step 6: Final answer
    x = 614,327.68

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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.