Home / 685,127.70-1,027,691.55-330,177.60

Finding the Fourth Proportional to 685,127.70, 1,027,691.55 and 330,177.60

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Solution

The fourth proportional to 685,127.70, 1,027,691.55 and 330,177.60 is: 495,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,127.70 : 1,027,691.55 = 330,177.60 : x
  2. Step 2: Convert to fraction form
    685,127.70/1,027,691.55 = 330,177.60/x
  3. Step 3: Cross multiply
    685,127.70x = 1,027,691.55 × 330,177.60
  4. Step 4: Simplify right side
    685,127.70x = 339,320,729,519.28
  5. Step 5: Solve for x
    x = 339,320,729,519.28/685,127.70
  6. Step 6: Final answer
    x = 495,266.40

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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.