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Finding the Fourth Proportional to 638,364, 881,022.12 and 366,517.10

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Solution

The fourth proportional to 638,364, 881,022.12 and 366,517.10 is: 505,839.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,364 : 881,022.12 = 366,517.10 : x
  2. Step 2: Convert to fraction form
    638,364/881,022.12 = 366,517.10/x
  3. Step 3: Cross multiply
    638,364x = 881,022.12 × 366,517.10
  4. Step 4: Simplify right side
    638,364x = 322,909,672,458.25
  5. Step 5: Solve for x
    x = 322,909,672,458.25/638,364
  6. Step 6: Final answer
    x = 505,839.42

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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.