Home / 990,581.88-1,485,033.42-391,965.36

Finding the Fourth Proportional to 990,581.88, 1,485,033.42 and 391,965.36

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Solution

The fourth proportional to 990,581.88, 1,485,033.42 and 391,965.36 is: 587,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,581.88 : 1,485,033.42 = 391,965.36 : x
  2. Step 2: Convert to fraction form
    990,581.88/1,485,033.42 = 391,965.36/x
  3. Step 3: Cross multiply
    990,581.88x = 1,485,033.42 × 391,965.36
  4. Step 4: Simplify right side
    990,581.88x = 582,081,659,082.33
  5. Step 5: Solve for x
    x = 582,081,659,082.33/990,581.88
  6. Step 6: Final answer
    x = 587,615.90

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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.