Home / 726,126.08-1,089,487.13-321,104.61

Finding the Fourth Proportional to 726,126.08, 1,089,487.13 and 321,104.61

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Solution

The fourth proportional to 726,126.08, 1,089,487.13 and 321,104.61 is: 481,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,126.08 : 1,089,487.13 = 321,104.61 : x
  2. Step 2: Convert to fraction form
    726,126.08/1,089,487.13 = 321,104.61/x
  3. Step 3: Cross multiply
    726,126.08x = 1,089,487.13 × 321,104.61
  4. Step 4: Simplify right side
    726,126.08x = 349,839,338,373.15
  5. Step 5: Solve for x
    x = 349,839,338,373.15/726,126.08
  6. Step 6: Final answer
    x = 481,788.70

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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.