Home / 1,962,205.80-2,707,905.45-1,187,978.64

Finding the Fourth Proportional to 1,962,205.80, 2,707,905.45 and 1,187,978.64

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Solution

The fourth proportional to 1,962,205.80, 2,707,905.45 and 1,187,978.64 is: 1,639,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962,205.80 : 2,707,905.45 = 1,187,978.64 : x
  2. Step 2: Convert to fraction form
    1,962,205.80/2,707,905.45 = 1,187,978.64/x
  3. Step 3: Cross multiply
    1,962,205.80x = 2,707,905.45 × 1,187,978.64
  4. Step 4: Simplify right side
    1,962,205.80x = 3,216,933,833,739.59
  5. Step 5: Solve for x
    x = 3,216,933,833,739.59/1,962,205.80
  6. Step 6: Final answer
    x = 1,639,447.72

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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.