Home / 813,811.80-1,220,832.90-252,787.80

Finding the Fourth Proportional to 813,811.80, 1,220,832.90 and 252,787.80

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Solution

The fourth proportional to 813,811.80, 1,220,832.90 and 252,787.80 is: 379,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,811.80 : 1,220,832.90 = 252,787.80 : x
  2. Step 2: Convert to fraction form
    813,811.80/1,220,832.90 = 252,787.80/x
  3. Step 3: Cross multiply
    813,811.80x = 1,220,832.90 × 252,787.80
  4. Step 4: Simplify right side
    813,811.80x = 308,611,662,958.62
  5. Step 5: Solve for x
    x = 308,611,662,958.62/813,811.80
  6. Step 6: Final answer
    x = 379,217.48

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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.