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Finding the Fourth Proportional to 678,350, 936,123 and 376,572.08

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Solution

The fourth proportional to 678,350, 936,123 and 376,572.08 is: 519,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,350 : 936,123 = 376,572.08 : x
  2. Step 2: Convert to fraction form
    678,350/936,123 = 376,572.08/x
  3. Step 3: Cross multiply
    678,350x = 936,123 × 376,572.08
  4. Step 4: Simplify right side
    678,350x = 352,517,785,245.84
  5. Step 5: Solve for x
    x = 352,517,785,245.84/678,350
  6. Step 6: Final answer
    x = 519,669.47

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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.