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Finding the Fourth Proportional to 911,665.80, 1,367,735.16 and 484,850.68

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Solution

The fourth proportional to 911,665.80, 1,367,735.16 and 484,850.68 is: 727,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,665.80 : 1,367,735.16 = 484,850.68 : x
  2. Step 2: Convert to fraction form
    911,665.80/1,367,735.16 = 484,850.68/x
  3. Step 3: Cross multiply
    911,665.80x = 1,367,735.16 × 484,850.68
  4. Step 4: Simplify right side
    911,665.80x = 663,147,322,385.91
  5. Step 5: Solve for x
    x = 663,147,322,385.91/911,665.80
  6. Step 6: Final answer
    x = 727,401.78

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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.