Home / 431,976.36-647,890.69-116,359.45

Finding the Fourth Proportional to 431,976.36, 647,890.69 and 116,359.45

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Solution

The fourth proportional to 431,976.36, 647,890.69 and 116,359.45 is: 174,519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,976.36 : 647,890.69 = 116,359.45 : x
  2. Step 2: Convert to fraction form
    431,976.36/647,890.69 = 116,359.45/x
  3. Step 3: Cross multiply
    431,976.36x = 647,890.69 × 116,359.45
  4. Step 4: Simplify right side
    431,976.36x = 75,388,204,348.52
  5. Step 5: Solve for x
    x = 75,388,204,348.52/431,976.36
  6. Step 6: Final answer
    x = 174,519.28

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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.