Home / 770,687.80-1,155,974.10-321,292.60

Finding the Fourth Proportional to 770,687.80, 1,155,974.10 and 321,292.60

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Solution

The fourth proportional to 770,687.80, 1,155,974.10 and 321,292.60 is: 481,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,687.80 : 1,155,974.10 = 321,292.60 : x
  2. Step 2: Convert to fraction form
    770,687.80/1,155,974.10 = 321,292.60/x
  3. Step 3: Cross multiply
    770,687.80x = 1,155,974.10 × 321,292.60
  4. Step 4: Simplify right side
    770,687.80x = 371,405,924,121.66
  5. Step 5: Solve for x
    x = 371,405,924,121.66/770,687.80
  6. Step 6: Final answer
    x = 481,914.89

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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.