Home / 809,276.40-1,212,456.60-387,622.80

Finding the Fourth Proportional to 809,276.40, 1,212,456.60 and 387,622.80

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Solution

The fourth proportional to 809,276.40, 1,212,456.60 and 387,622.80 is: 580,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,276.40 : 1,212,456.60 = 387,622.80 : x
  2. Step 2: Convert to fraction form
    809,276.40/1,212,456.60 = 387,622.80/x
  3. Step 3: Cross multiply
    809,276.40x = 1,212,456.60 × 387,622.80
  4. Step 4: Simplify right side
    809,276.40x = 469,975,822,170.48
  5. Step 5: Solve for x
    x = 469,975,822,170.48/809,276.40
  6. Step 6: Final answer
    x = 580,735.86

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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.