Home / 813,687.60-1,220,531.40-252,778.80

Finding the Fourth Proportional to 813,687.60, 1,220,531.40 and 252,778.80

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Solution

The fourth proportional to 813,687.60, 1,220,531.40 and 252,778.80 is: 379,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,687.60 : 1,220,531.40 = 252,778.80 : x
  2. Step 2: Convert to fraction form
    813,687.60/1,220,531.40 = 252,778.80/x
  3. Step 3: Cross multiply
    813,687.60x = 1,220,531.40 × 252,778.80
  4. Step 4: Simplify right side
    813,687.60x = 308,524,462,654.32
  5. Step 5: Solve for x
    x = 308,524,462,654.32/813,687.60
  6. Step 6: Final answer
    x = 379,168.20

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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.