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Finding the Fourth Proportional to 911,715.80, 1,367,573.70 and 809,364.20

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Solution

The fourth proportional to 911,715.80, 1,367,573.70 and 809,364.20 is: 1,214,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,715.80 : 1,367,573.70 = 809,364.20 : x
  2. Step 2: Convert to fraction form
    911,715.80/1,367,573.70 = 809,364.20/x
  3. Step 3: Cross multiply
    911,715.80x = 1,367,573.70 × 809,364.20
  4. Step 4: Simplify right side
    911,715.80x = 1,106,865,193,641.54
  5. Step 5: Solve for x
    x = 1,106,865,193,641.54/911,715.80
  6. Step 6: Final answer
    x = 1,214,046.30

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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.