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Finding the Fourth Proportional to 663,842.44, 916,179.96 and 377,405.38

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Solution

The fourth proportional to 663,842.44, 916,179.96 and 377,405.38 is: 520,863.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,842.44 : 916,179.96 = 377,405.38 : x
  2. Step 2: Convert to fraction form
    663,842.44/916,179.96 = 377,405.38/x
  3. Step 3: Cross multiply
    663,842.44x = 916,179.96 × 377,405.38
  4. Step 4: Simplify right side
    663,842.44x = 345,771,245,952.19
  5. Step 5: Solve for x
    x = 345,771,245,952.19/663,842.44
  6. Step 6: Final answer
    x = 520,863.42

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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.