Home / 1,988,116.74-2,982,091.82-640,249.52

Finding the Fourth Proportional to 1,988,116.74, 2,982,091.82 and 640,249.52

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Solution

The fourth proportional to 1,988,116.74, 2,982,091.82 and 640,249.52 is: 960,347.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,116.74 : 2,982,091.82 = 640,249.52 : x
  2. Step 2: Convert to fraction form
    1,988,116.74/2,982,091.82 = 640,249.52/x
  3. Step 3: Cross multiply
    1,988,116.74x = 2,982,091.82 × 640,249.52
  4. Step 4: Simplify right side
    1,988,116.74x = 1,909,282,838,239.22
  5. Step 5: Solve for x
    x = 1,909,282,838,239.22/1,988,116.74
  6. Step 6: Final answer
    x = 960,347.45

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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.