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Finding the Fourth Proportional to 2,079,205.94, 2,869,328.13 and 1,219,780.82

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Solution

The fourth proportional to 2,079,205.94, 2,869,328.13 and 1,219,780.82 is: 1,683,311.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079,205.94 : 2,869,328.13 = 1,219,780.82 : x
  2. Step 2: Convert to fraction form
    2,079,205.94/2,869,328.13 = 1,219,780.82/x
  3. Step 3: Cross multiply
    2,079,205.94x = 2,869,328.13 × 1,219,780.82
  4. Step 4: Simplify right side
    2,079,205.94x = 3,499,951,419,260.47
  5. Step 5: Solve for x
    x = 3,499,951,419,260.47/2,079,205.94
  6. Step 6: Final answer
    x = 1,683,311.57

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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.