Home / 990,987.77-1,486,490.42-391,949

Finding the Fourth Proportional to 990,987.77, 1,486,490.42 and 391,949

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Solution

The fourth proportional to 990,987.77, 1,486,490.42 and 391,949 is: 587,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,987.77 : 1,486,490.42 = 391,949 : x
  2. Step 2: Convert to fraction form
    990,987.77/1,486,490.42 = 391,949/x
  3. Step 3: Cross multiply
    990,987.77x = 1,486,490.42 × 391,949
  4. Step 4: Simplify right side
    990,987.77x = 582,628,433,628.58
  5. Step 5: Solve for x
    x = 582,628,433,628.58/990,987.77
  6. Step 6: Final answer
    x = 587,926.97

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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.