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Finding the Fourth Proportional to 1,279,396.92, 1,914,928.92 and 942,304.80

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Solution

The fourth proportional to 1,279,396.92, 1,914,928.92 and 942,304.80 is: 1,410,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,396.92 : 1,914,928.92 = 942,304.80 : x
  2. Step 2: Convert to fraction form
    1,279,396.92/1,914,928.92 = 942,304.80/x
  3. Step 3: Cross multiply
    1,279,396.92x = 1,914,928.92 × 942,304.80
  4. Step 4: Simplify right side
    1,279,396.92x = 1,804,446,712,974.82
  5. Step 5: Solve for x
    x = 1,804,446,712,974.82/1,279,396.92
  6. Step 6: Final answer
    x = 1,410,388.51

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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.