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Finding the Fourth Proportional to 2,811,293.07, 4,216,939.65 and 681,377.19

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Solution

The fourth proportional to 2,811,293.07, 4,216,939.65 and 681,377.19 is: 1,022,065.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,293.07 : 4,216,939.65 = 681,377.19 : x
  2. Step 2: Convert to fraction form
    2,811,293.07/4,216,939.65 = 681,377.19/x
  3. Step 3: Cross multiply
    2,811,293.07x = 4,216,939.65 × 681,377.19
  4. Step 4: Simplify right side
    2,811,293.07x = 2,873,326,486,600.43
  5. Step 5: Solve for x
    x = 2,873,326,486,600.43/2,811,293.07
  6. Step 6: Final answer
    x = 1,022,065.79

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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.