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Finding the Fourth Proportional to 694,137, 957,909.70 and 376,185

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Solution

The fourth proportional to 694,137, 957,909.70 and 376,185 is: 519,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,137 : 957,909.70 = 376,185 : x
  2. Step 2: Convert to fraction form
    694,137/957,909.70 = 376,185/x
  3. Step 3: Cross multiply
    694,137x = 957,909.70 × 376,185
  4. Step 4: Simplify right side
    694,137x = 360,351,260,494.50
  5. Step 5: Solve for x
    x = 360,351,260,494.50/694,137
  6. Step 6: Final answer
    x = 519,135.65

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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.