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Finding the Fourth Proportional to 885,657.80, 1,328,270.70 and 254,505.80

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Solution

The fourth proportional to 885,657.80, 1,328,270.70 and 254,505.80 is: 381,696.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,657.80 : 1,328,270.70 = 254,505.80 : x
  2. Step 2: Convert to fraction form
    885,657.80/1,328,270.70 = 254,505.80/x
  3. Step 3: Cross multiply
    885,657.80x = 1,328,270.70 × 254,505.80
  4. Step 4: Simplify right side
    885,657.80x = 338,052,597,120.06
  5. Step 5: Solve for x
    x = 338,052,597,120.06/885,657.80
  6. Step 6: Final answer
    x = 381,696.63

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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.