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Finding the Fourth Proportional to 694,805.22, 958,612.63 and 388,832.98

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Solution

The fourth proportional to 694,805.22, 958,612.63 and 388,832.98 is: 536,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,805.22 : 958,612.63 = 388,832.98 : x
  2. Step 2: Convert to fraction form
    694,805.22/958,612.63 = 388,832.98/x
  3. Step 3: Cross multiply
    694,805.22x = 958,612.63 × 388,832.98
  4. Step 4: Simplify right side
    694,805.22x = 372,740,206,895.69
  5. Step 5: Solve for x
    x = 372,740,206,895.69/694,805.22
  6. Step 6: Final answer
    x = 536,467.20

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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.