Home / 1,221,185.92-1,686,070.64-762,998.08

Finding the Fourth Proportional to 1,221,185.92, 1,686,070.64 and 762,998.08

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Solution

The fourth proportional to 1,221,185.92, 1,686,070.64 and 762,998.08 is: 1,053,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,185.92 : 1,686,070.64 = 762,998.08 : x
  2. Step 2: Convert to fraction form
    1,221,185.92/1,686,070.64 = 762,998.08/x
  3. Step 3: Cross multiply
    1,221,185.92x = 1,686,070.64 × 762,998.08
  4. Step 4: Simplify right side
    1,221,185.92x = 1,286,468,661,064.37
  5. Step 5: Solve for x
    x = 1,286,468,661,064.37/1,221,185.92
  6. Step 6: Final answer
    x = 1,053,458.48

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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.