Home / 874,128.33-1,311,425.78-313,219.53

Finding the Fourth Proportional to 874,128.33, 1,311,425.78 and 313,219.53

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Solution

The fourth proportional to 874,128.33, 1,311,425.78 and 313,219.53 is: 469,912.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,128.33 : 1,311,425.78 = 313,219.53 : x
  2. Step 2: Convert to fraction form
    874,128.33/1,311,425.78 = 313,219.53/x
  3. Step 3: Cross multiply
    874,128.33x = 1,311,425.78 × 313,219.53
  4. Step 4: Simplify right side
    874,128.33x = 410,764,164,875.39
  5. Step 5: Solve for x
    x = 410,764,164,875.39/874,128.33
  6. Step 6: Final answer
    x = 469,912.88

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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.