Home / 1,378,902.56-1,902,363.17-855,371.21

Finding the Fourth Proportional to 1,378,902.56, 1,902,363.17 and 855,371.21

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Solution

The fourth proportional to 1,378,902.56, 1,902,363.17 and 855,371.21 is: 1,180,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,902.56 : 1,902,363.17 = 855,371.21 : x
  2. Step 2: Convert to fraction form
    1,378,902.56/1,902,363.17 = 855,371.21/x
  3. Step 3: Cross multiply
    1,378,902.56x = 1,902,363.17 × 855,371.21
  4. Step 4: Simplify right side
    1,378,902.56x = 1,627,226,672,793.66
  5. Step 5: Solve for x
    x = 1,627,226,672,793.66/1,378,902.56
  6. Step 6: Final answer
    x = 1,180,088.23

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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.