Home / 2,115,929.25-3,172,893.48-819,688.78

Finding the Fourth Proportional to 2,115,929.25, 3,172,893.48 and 819,688.78

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Solution

The fourth proportional to 2,115,929.25, 3,172,893.48 and 819,688.78 is: 1,229,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,929.25 : 3,172,893.48 = 819,688.78 : x
  2. Step 2: Convert to fraction form
    2,115,929.25/3,172,893.48 = 819,688.78/x
  3. Step 3: Cross multiply
    2,115,929.25x = 3,172,893.48 × 819,688.78
  4. Step 4: Simplify right side
    2,115,929.25x = 2,600,785,185,691.15
  5. Step 5: Solve for x
    x = 2,600,785,185,691.15/2,115,929.25
  6. Step 6: Final answer
    x = 1,229,145.63

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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.