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Finding the Fourth Proportional to 636,344.94, 878,158.89 and 345,959.31

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Solution

The fourth proportional to 636,344.94, 878,158.89 and 345,959.31 is: 477,425.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,344.94 : 878,158.89 = 345,959.31 : x
  2. Step 2: Convert to fraction form
    636,344.94/878,158.89 = 345,959.31/x
  3. Step 3: Cross multiply
    636,344.94x = 878,158.89 × 345,959.31
  4. Step 4: Simplify right side
    636,344.94x = 303,807,243,654.77
  5. Step 5: Solve for x
    x = 303,807,243,654.77/636,344.94
  6. Step 6: Final answer
    x = 477,425.41

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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.