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Finding the Fourth Proportional to 635,722.18, 878,073.69 and 475,290.34

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Solution

The fourth proportional to 635,722.18, 878,073.69 and 475,290.34 is: 656,481.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,722.18 : 878,073.69 = 475,290.34 : x
  2. Step 2: Convert to fraction form
    635,722.18/878,073.69 = 475,290.34/x
  3. Step 3: Cross multiply
    635,722.18x = 878,073.69 × 475,290.34
  4. Step 4: Simplify right side
    635,722.18x = 417,339,942,665.16
  5. Step 5: Solve for x
    x = 417,339,942,665.16/635,722.18
  6. Step 6: Final answer
    x = 656,481.65

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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.