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Finding the Fourth Proportional to 885,644.80, 1,328,251.20 and 254,492.80

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Solution

The fourth proportional to 885,644.80, 1,328,251.20 and 254,492.80 is: 381,677.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,644.80 : 1,328,251.20 = 254,492.80 : x
  2. Step 2: Convert to fraction form
    885,644.80/1,328,251.20 = 254,492.80/x
  3. Step 3: Cross multiply
    885,644.80x = 1,328,251.20 × 254,492.80
  4. Step 4: Simplify right side
    885,644.80x = 338,030,366,991.36
  5. Step 5: Solve for x
    x = 338,030,366,991.36/885,644.80
  6. Step 6: Final answer
    x = 381,677.13

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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.