Home / 1,382,721.57-1,908,269.42-762,648.21

Finding the Fourth Proportional to 1,382,721.57, 1,908,269.42 and 762,648.21

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Solution

The fourth proportional to 1,382,721.57, 1,908,269.42 and 762,648.21 is: 1,052,517.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,721.57 : 1,908,269.42 = 762,648.21 : x
  2. Step 2: Convert to fraction form
    1,382,721.57/1,908,269.42 = 762,648.21/x
  3. Step 3: Cross multiply
    1,382,721.57x = 1,908,269.42 × 762,648.21
  4. Step 4: Simplify right side
    1,382,721.57x = 1,455,338,253,547.50
  5. Step 5: Solve for x
    x = 1,455,338,253,547.50/1,382,721.57
  6. Step 6: Final answer
    x = 1,052,517.21

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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.