Home / 2,081,215.20-3,121,909.20-661,231.20

Finding the Fourth Proportional to 2,081,215.20, 3,121,909.20 and 661,231.20

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Solution

The fourth proportional to 2,081,215.20, 3,121,909.20 and 661,231.20 is: 991,874.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081,215.20 : 3,121,909.20 = 661,231.20 : x
  2. Step 2: Convert to fraction form
    2,081,215.20/3,121,909.20 = 661,231.20/x
  3. Step 3: Cross multiply
    2,081,215.20x = 3,121,909.20 × 661,231.20
  4. Step 4: Simplify right side
    2,081,215.20x = 2,064,303,766,607.04
  5. Step 5: Solve for x
    x = 2,064,303,766,607.04/2,081,215.20
  6. Step 6: Final answer
    x = 991,874.25

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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.