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Finding the Fourth Proportional to 885,663.80, 1,328,279.70 and 254,511.80

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Solution

The fourth proportional to 885,663.80, 1,328,279.70 and 254,511.80 is: 381,705.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,663.80 : 1,328,279.70 = 254,511.80 : x
  2. Step 2: Convert to fraction form
    885,663.80/1,328,279.70 = 254,511.80/x
  3. Step 3: Cross multiply
    885,663.80x = 1,328,279.70 × 254,511.80
  4. Step 4: Simplify right side
    885,663.80x = 338,062,857,350.46
  5. Step 5: Solve for x
    x = 338,062,857,350.46/885,663.80
  6. Step 6: Final answer
    x = 381,705.63

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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.