Home / 813,781.80-1,220,787.90-252,757.80

Finding the Fourth Proportional to 813,781.80, 1,220,787.90 and 252,757.80

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Solution

The fourth proportional to 813,781.80, 1,220,787.90 and 252,757.80 is: 379,172.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,781.80 : 1,220,787.90 = 252,757.80 : x
  2. Step 2: Convert to fraction form
    813,781.80/1,220,787.90 = 252,757.80/x
  3. Step 3: Cross multiply
    813,781.80x = 1,220,787.90 × 252,757.80
  4. Step 4: Simplify right side
    813,781.80x = 308,563,663,870.62
  5. Step 5: Solve for x
    x = 308,563,663,870.62/813,781.80
  6. Step 6: Final answer
    x = 379,172.48

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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.