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Finding the Fourth Proportional to 813,818.80, 1,220,843.40 and 252,794.80

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Solution

The fourth proportional to 813,818.80, 1,220,843.40 and 252,794.80 is: 379,227.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,818.80 : 1,220,843.40 = 252,794.80 : x
  2. Step 2: Convert to fraction form
    813,818.80/1,220,843.40 = 252,794.80/x
  3. Step 3: Cross multiply
    813,818.80x = 1,220,843.40 × 252,794.80
  4. Step 4: Simplify right side
    813,818.80x = 308,622,863,134.32
  5. Step 5: Solve for x
    x = 308,622,863,134.32/813,818.80
  6. Step 6: Final answer
    x = 379,227.98

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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.