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Finding the Fourth Proportional to 809,594.60, 1,212,059.10 and 725,613.80

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Solution

The fourth proportional to 809,594.60, 1,212,059.10 and 725,613.80 is: 1,086,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,594.60 : 1,212,059.10 = 725,613.80 : x
  2. Step 2: Convert to fraction form
    809,594.60/1,212,059.10 = 725,613.80/x
  3. Step 3: Cross multiply
    809,594.60x = 1,212,059.10 × 725,613.80
  4. Step 4: Simplify right side
    809,594.60x = 879,486,809,375.58
  5. Step 5: Solve for x
    x = 879,486,809,375.58/809,594.60
  6. Step 6: Final answer
    x = 1,086,329.89

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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.