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Finding the Fourth Proportional to 694,662.29, 958,685.45 and 388,769.30

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Solution

The fourth proportional to 694,662.29, 958,685.45 and 388,769.30 is: 536,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,662.29 : 958,685.45 = 388,769.30 : x
  2. Step 2: Convert to fraction form
    694,662.29/958,685.45 = 388,769.30/x
  3. Step 3: Cross multiply
    694,662.29x = 958,685.45 × 388,769.30
  4. Step 4: Simplify right side
    694,662.29x = 372,707,464,579.41
  5. Step 5: Solve for x
    x = 372,707,464,579.41/694,662.29
  6. Step 6: Final answer
    x = 536,530.44

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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.