Home / 1,987,891.74-2,982,122.60-639,606.24

Finding the Fourth Proportional to 1,987,891.74, 2,982,122.60 and 639,606.24

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Solution

The fourth proportional to 1,987,891.74, 2,982,122.60 and 639,606.24 is: 959,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,891.74 : 2,982,122.60 = 639,606.24 : x
  2. Step 2: Convert to fraction form
    1,987,891.74/2,982,122.60 = 639,606.24/x
  3. Step 3: Cross multiply
    1,987,891.74x = 2,982,122.60 × 639,606.24
  4. Step 4: Simplify right side
    1,987,891.74x = 1,907,384,220,206.99
  5. Step 5: Solve for x
    x = 1,907,384,220,206.99/1,987,891.74
  6. Step 6: Final answer
    x = 959,501.05

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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.