Home / 2,129,111.40-3,195,999.90-1,331,293.80

Finding the Fourth Proportional to 2,129,111.40, 3,195,999.90 and 1,331,293.80

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Solution

The fourth proportional to 2,129,111.40, 3,195,999.90 and 1,331,293.80 is: 1,998,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,111.40 : 3,195,999.90 = 1,331,293.80 : x
  2. Step 2: Convert to fraction form
    2,129,111.40/3,195,999.90 = 1,331,293.80/x
  3. Step 3: Cross multiply
    2,129,111.40x = 3,195,999.90 × 1,331,293.80
  4. Step 4: Simplify right side
    2,129,111.40x = 4,254,814,851,670.62
  5. Step 5: Solve for x
    x = 4,254,814,851,670.62/2,129,111.40
  6. Step 6: Final answer
    x = 1,998,399.36

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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.