Home / 1,371,079.48-1,891,864.38-861,421

Finding the Fourth Proportional to 1,371,079.48, 1,891,864.38 and 861,421

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Solution

The fourth proportional to 1,371,079.48, 1,891,864.38 and 861,421 is: 1,188,619.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371,079.48 : 1,891,864.38 = 861,421 : x
  2. Step 2: Convert to fraction form
    1,371,079.48/1,891,864.38 = 861,421/x
  3. Step 3: Cross multiply
    1,371,079.48x = 1,891,864.38 × 861,421
  4. Step 4: Simplify right side
    1,371,079.48x = 1,629,691,706,083.98
  5. Step 5: Solve for x
    x = 1,629,691,706,083.98/1,371,079.48
  6. Step 6: Final answer
    x = 1,188,619.43

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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.