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Finding the Fourth Proportional to 552,725.05, 762,751.73 and 311,007.48

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Solution

The fourth proportional to 552,725.05, 762,751.73 and 311,007.48 is: 429,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,725.05 : 762,751.73 = 311,007.48 : x
  2. Step 2: Convert to fraction form
    552,725.05/762,751.73 = 311,007.48/x
  3. Step 3: Cross multiply
    552,725.05x = 762,751.73 × 311,007.48
  4. Step 4: Simplify right side
    552,725.05x = 237,221,494,190.46
  5. Step 5: Solve for x
    x = 237,221,494,190.46/552,725.05
  6. Step 6: Final answer
    x = 429,185.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.