Home / 1,296,262.80-1,944,394.20-821,408.40

Finding the Fourth Proportional to 1,296,262.80, 1,944,394.20 and 821,408.40

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Solution

The fourth proportional to 1,296,262.80, 1,944,394.20 and 821,408.40 is: 1,232,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,262.80 : 1,944,394.20 = 821,408.40 : x
  2. Step 2: Convert to fraction form
    1,296,262.80/1,944,394.20 = 821,408.40/x
  3. Step 3: Cross multiply
    1,296,262.80x = 1,944,394.20 × 821,408.40
  4. Step 4: Simplify right side
    1,296,262.80x = 1,597,141,728,791.28
  5. Step 5: Solve for x
    x = 1,597,141,728,791.28/1,296,262.80
  6. Step 6: Final answer
    x = 1,232,112.60

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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.