Home / 1,381,871.04-1,907,791.20-905,772.48

Finding the Fourth Proportional to 1,381,871.04, 1,907,791.20 and 905,772.48

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Solution

The fourth proportional to 1,381,871.04, 1,907,791.20 and 905,772.48 is: 1,250,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,871.04 : 1,907,791.20 = 905,772.48 : x
  2. Step 2: Convert to fraction form
    1,381,871.04/1,907,791.20 = 905,772.48/x
  3. Step 3: Cross multiply
    1,381,871.04x = 1,907,791.20 × 905,772.48
  4. Step 4: Simplify right side
    1,381,871.04x = 1,728,024,766,546.18
  5. Step 5: Solve for x
    x = 1,728,024,766,546.18/1,381,871.04
  6. Step 6: Final answer
    x = 1,250,496.40

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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.