Home / 1,987,444.32-2,980,748.52-639,727.44

Finding the Fourth Proportional to 1,987,444.32, 2,980,748.52 and 639,727.44

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Solution

The fourth proportional to 1,987,444.32, 2,980,748.52 and 639,727.44 is: 959,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,444.32 : 2,980,748.52 = 639,727.44 : x
  2. Step 2: Convert to fraction form
    1,987,444.32/2,980,748.52 = 639,727.44/x
  3. Step 3: Cross multiply
    1,987,444.32x = 2,980,748.52 × 639,727.44
  4. Step 4: Simplify right side
    1,987,444.32x = 1,906,866,619,983.39
  5. Step 5: Solve for x
    x = 1,906,866,619,983.39/1,987,444.32
  6. Step 6: Final answer
    x = 959,456.63

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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.