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Finding the Fourth Proportional to 678,377.64, 936,160.26 and 376,570.92

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Solution

The fourth proportional to 678,377.64, 936,160.26 and 376,570.92 is: 519,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,377.64 : 936,160.26 = 376,570.92 : x
  2. Step 2: Convert to fraction form
    678,377.64/936,160.26 = 376,570.92/x
  3. Step 3: Cross multiply
    678,377.64x = 936,160.26 × 376,570.92
  4. Step 4: Simplify right side
    678,377.64x = 352,530,730,375.64
  5. Step 5: Solve for x
    x = 352,530,730,375.64/678,377.64
  6. Step 6: Final answer
    x = 519,667.38

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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.