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Finding the Fourth Proportional to 809,725, 1,213,758.04 and 336,685

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Solution

The fourth proportional to 809,725, 1,213,758.04 and 336,685 is: 504,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,725 : 1,213,758.04 = 336,685 : x
  2. Step 2: Convert to fraction form
    809,725/1,213,758.04 = 336,685/x
  3. Step 3: Cross multiply
    809,725x = 1,213,758.04 × 336,685
  4. Step 4: Simplify right side
    809,725x = 408,654,125,697.40
  5. Step 5: Solve for x
    x = 408,654,125,697.40/809,725
  6. Step 6: Final answer
    x = 504,682.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.