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Finding the Fourth Proportional to 678,847.25, 936,809.82 and 372,943.44

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Solution

The fourth proportional to 678,847.25, 936,809.82 and 372,943.44 is: 514,662.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,847.25 : 936,809.82 = 372,943.44 : x
  2. Step 2: Convert to fraction form
    678,847.25/936,809.82 = 372,943.44/x
  3. Step 3: Cross multiply
    678,847.25x = 936,809.82 × 372,943.44
  4. Step 4: Simplify right side
    678,847.25x = 349,377,076,896.58
  5. Step 5: Solve for x
    x = 349,377,076,896.58/678,847.25
  6. Step 6: Final answer
    x = 514,662.29

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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.