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Finding the Fourth Proportional to 644,208.56, 888,942.84 and 376,092.08

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Solution

The fourth proportional to 644,208.56, 888,942.84 and 376,092.08 is: 518,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,208.56 : 888,942.84 = 376,092.08 : x
  2. Step 2: Convert to fraction form
    644,208.56/888,942.84 = 376,092.08/x
  3. Step 3: Cross multiply
    644,208.56x = 888,942.84 × 376,092.08
  4. Step 4: Simplify right side
    644,208.56x = 334,324,361,696.71
  5. Step 5: Solve for x
    x = 334,324,361,696.71/644,208.56
  6. Step 6: Final answer
    x = 518,969.14

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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.