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Finding the Fourth Proportional to 643,827, 888,481.26 and 417,474.12

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Solution

The fourth proportional to 643,827, 888,481.26 and 417,474.12 is: 576,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,827 : 888,481.26 = 417,474.12 : x
  2. Step 2: Convert to fraction form
    643,827/888,481.26 = 417,474.12/x
  3. Step 3: Cross multiply
    643,827x = 888,481.26 × 417,474.12
  4. Step 4: Simplify right side
    643,827x = 370,917,932,154.99
  5. Step 5: Solve for x
    x = 370,917,932,154.99/643,827
  6. Step 6: Final answer
    x = 576,114.29

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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.