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Finding the Fourth Proportional to 678,324.26, 936,040.65 and 376,494.50

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Solution

The fourth proportional to 678,324.26, 936,040.65 and 376,494.50 is: 519,536.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,324.26 : 936,040.65 = 376,494.50 : x
  2. Step 2: Convert to fraction form
    678,324.26/936,040.65 = 376,494.50/x
  3. Step 3: Cross multiply
    678,324.26x = 936,040.65 × 376,494.50
  4. Step 4: Simplify right side
    678,324.26x = 352,414,156,501.43
  5. Step 5: Solve for x
    x = 352,414,156,501.43/678,324.26
  6. Step 6: Final answer
    x = 519,536.42

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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.