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Finding the Fourth Proportional to 628,912.14, 868,159.56 and 475,993

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Solution

The fourth proportional to 628,912.14, 868,159.56 and 475,993 is: 657,067.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,912.14 : 868,159.56 = 475,993 : x
  2. Step 2: Convert to fraction form
    628,912.14/868,159.56 = 475,993/x
  3. Step 3: Cross multiply
    628,912.14x = 868,159.56 × 475,993
  4. Step 4: Simplify right side
    628,912.14x = 413,237,873,443.08
  5. Step 5: Solve for x
    x = 413,237,873,443.08/628,912.14
  6. Step 6: Final answer
    x = 657,067.73

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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.