Home / 1,988,079.78-2,982,119.70-492,171.78

Finding the Fourth Proportional to 1,988,079.78, 2,982,119.70 and 492,171.78

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Solution

The fourth proportional to 1,988,079.78, 2,982,119.70 and 492,171.78 is: 738,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,079.78 : 2,982,119.70 = 492,171.78 : x
  2. Step 2: Convert to fraction form
    1,988,079.78/2,982,119.70 = 492,171.78/x
  3. Step 3: Cross multiply
    1,988,079.78x = 2,982,119.70 × 492,171.78
  4. Step 4: Simplify right side
    1,988,079.78x = 1,467,715,160,922.07
  5. Step 5: Solve for x
    x = 1,467,715,160,922.07/1,988,079.78
  6. Step 6: Final answer
    x = 738,257.68

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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.