Home / 814,122.60-1,220,965.20-281,806.80

Finding the Fourth Proportional to 814,122.60, 1,220,965.20 and 281,806.80

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Solution

The fourth proportional to 814,122.60, 1,220,965.20 and 281,806.80 is: 422,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,122.60 : 1,220,965.20 = 281,806.80 : x
  2. Step 2: Convert to fraction form
    814,122.60/1,220,965.20 = 281,806.80/x
  3. Step 3: Cross multiply
    814,122.60x = 1,220,965.20 × 281,806.80
  4. Step 4: Simplify right side
    814,122.60x = 344,076,295,923.36
  5. Step 5: Solve for x
    x = 344,076,295,923.36/814,122.60
  6. Step 6: Final answer
    x = 422,634.50

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1.5x scale

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.