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Finding the Fourth Proportional to 499,573.11, 689,414.78 and 275,805.43

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Solution

The fourth proportional to 499,573.11, 689,414.78 and 275,805.43 is: 380,613.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,573.11 : 689,414.78 = 275,805.43 : x
  2. Step 2: Convert to fraction form
    499,573.11/689,414.78 = 275,805.43/x
  3. Step 3: Cross multiply
    499,573.11x = 689,414.78 × 275,805.43
  4. Step 4: Simplify right side
    499,573.11x = 190,144,338,467.23
  5. Step 5: Solve for x
    x = 190,144,338,467.23/499,573.11
  6. Step 6: Final answer
    x = 380,613.64

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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.