Home / 431,975.36-647,889.20-116,358.45

Finding the Fourth Proportional to 431,975.36, 647,889.20 and 116,358.45

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Solution

The fourth proportional to 431,975.36, 647,889.20 and 116,358.45 is: 174,517.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,975.36 : 647,889.20 = 116,358.45 : x
  2. Step 2: Convert to fraction form
    431,975.36/647,889.20 = 116,358.45/x
  3. Step 3: Cross multiply
    431,975.36x = 647,889.20 × 116,358.45
  4. Step 4: Simplify right side
    431,975.36x = 75,387,382,501.95
  5. Step 5: Solve for x
    x = 75,387,382,501.95/431,975.36
  6. Step 6: Final answer
    x = 174,517.79

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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.