Home / 1,221,098.61-1,685,951.24-762,911.31

Finding the Fourth Proportional to 1,221,098.61, 1,685,951.24 and 762,911.31

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Solution

The fourth proportional to 1,221,098.61, 1,685,951.24 and 762,911.31 is: 1,053,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,098.61 : 1,685,951.24 = 762,911.31 : x
  2. Step 2: Convert to fraction form
    1,221,098.61/1,685,951.24 = 762,911.31/x
  3. Step 3: Cross multiply
    1,221,098.61x = 1,685,951.24 × 762,911.31
  4. Step 4: Simplify right side
    1,221,098.61x = 1,286,231,265,289.97
  5. Step 5: Solve for x
    x = 1,286,231,265,289.97/1,221,098.61
  6. Step 6: Final answer
    x = 1,053,339.39

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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.