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Finding the Fourth Proportional to 694,400.72, 958,374.99 and 422,415.81

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Solution

The fourth proportional to 694,400.72, 958,374.99 and 422,415.81 is: 582,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,400.72 : 958,374.99 = 422,415.81 : x
  2. Step 2: Convert to fraction form
    694,400.72/958,374.99 = 422,415.81/x
  3. Step 3: Cross multiply
    694,400.72x = 958,374.99 × 422,415.81
  4. Step 4: Simplify right side
    694,400.72x = 404,832,747,684.59
  5. Step 5: Solve for x
    x = 404,832,747,684.59/694,400.72
  6. Step 6: Final answer
    x = 582,995.87

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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.