Home / 2,154,129.45-2,972,716.74-1,187,262.21

Finding the Fourth Proportional to 2,154,129.45, 2,972,716.74 and 1,187,262.21

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Solution

The fourth proportional to 2,154,129.45, 2,972,716.74 and 1,187,262.21 is: 1,638,431.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,129.45 : 2,972,716.74 = 1,187,262.21 : x
  2. Step 2: Convert to fraction form
    2,154,129.45/2,972,716.74 = 1,187,262.21/x
  3. Step 3: Cross multiply
    2,154,129.45x = 2,972,716.74 × 1,187,262.21
  4. Step 4: Simplify right side
    2,154,129.45x = 3,529,394,246,436.40
  5. Step 5: Solve for x
    x = 3,529,394,246,436.40/2,154,129.45
  6. Step 6: Final answer
    x = 1,638,431.83

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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.