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Finding the Fourth Proportional to 911,196.60, 1,366,794.90 and 486,043.80

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Solution

The fourth proportional to 911,196.60, 1,366,794.90 and 486,043.80 is: 729,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,196.60 : 1,366,794.90 = 486,043.80 : x
  2. Step 2: Convert to fraction form
    911,196.60/1,366,794.90 = 486,043.80/x
  3. Step 3: Cross multiply
    911,196.60x = 1,366,794.90 × 486,043.80
  4. Step 4: Simplify right side
    911,196.60x = 664,322,187,016.62
  5. Step 5: Solve for x
    x = 664,322,187,016.62/911,196.60
  6. Step 6: Final answer
    x = 729,065.70

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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.