Home / 874,172.21-1,311,491.66-313,263.41

Finding the Fourth Proportional to 874,172.21, 1,311,491.66 and 313,263.41

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Solution

The fourth proportional to 874,172.21, 1,311,491.66 and 313,263.41 is: 469,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,172.21 : 1,311,491.66 = 313,263.41 : x
  2. Step 2: Convert to fraction form
    874,172.21/1,311,491.66 = 313,263.41/x
  3. Step 3: Cross multiply
    874,172.21x = 1,311,491.66 × 313,263.41
  4. Step 4: Simplify right side
    874,172.21x = 410,842,341,474.39
  5. Step 5: Solve for x
    x = 410,842,341,474.39/874,172.21
  6. Step 6: Final answer
    x = 469,978.73

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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.