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Finding the Fourth Proportional to 628,911.14, 868,158.18 and 475,992

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Solution

The fourth proportional to 628,911.14, 868,158.18 and 475,992 is: 657,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,911.14 : 868,158.18 = 475,992 : x
  2. Step 2: Convert to fraction form
    628,911.14/868,158.18 = 475,992/x
  3. Step 3: Cross multiply
    628,911.14x = 868,158.18 × 475,992
  4. Step 4: Simplify right side
    628,911.14x = 413,236,348,414.56
  5. Step 5: Solve for x
    x = 413,236,348,414.56/628,911.14
  6. Step 6: Final answer
    x = 657,066.36

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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.