Home / 1,381,487.78-1,906,511.96-769,640.19

Finding the Fourth Proportional to 1,381,487.78, 1,906,511.96 and 769,640.19

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Solution

The fourth proportional to 1,381,487.78, 1,906,511.96 and 769,640.19 is: 1,062,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,487.78 : 1,906,511.96 = 769,640.19 : x
  2. Step 2: Convert to fraction form
    1,381,487.78/1,906,511.96 = 769,640.19/x
  3. Step 3: Cross multiply
    1,381,487.78x = 1,906,511.96 × 769,640.19
  4. Step 4: Simplify right side
    1,381,487.78x = 1,467,328,227,131.67
  5. Step 5: Solve for x
    x = 1,467,328,227,131.67/1,381,487.78
  6. Step 6: Final answer
    x = 1,062,136.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.