Home / 801,100.89-1,201,220.31-321,087.81

Finding the Fourth Proportional to 801,100.89, 1,201,220.31 and 321,087.81

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Solution

The fourth proportional to 801,100.89, 1,201,220.31 and 321,087.81 is: 481,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,100.89 : 1,201,220.31 = 321,087.81 : x
  2. Step 2: Convert to fraction form
    801,100.89/1,201,220.31 = 321,087.81/x
  3. Step 3: Cross multiply
    801,100.89x = 1,201,220.31 × 321,087.81
  4. Step 4: Simplify right side
    801,100.89x = 385,697,198,665.42
  5. Step 5: Solve for x
    x = 385,697,198,665.42/801,100.89
  6. Step 6: Final answer
    x = 481,458.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.