Home / 2,138,728.66-3,208,290.20-699,419.53

Finding the Fourth Proportional to 2,138,728.66, 3,208,290.20 and 699,419.53

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Solution

The fourth proportional to 2,138,728.66, 3,208,290.20 and 699,419.53 is: 1,049,193.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,728.66 : 3,208,290.20 = 699,419.53 : x
  2. Step 2: Convert to fraction form
    2,138,728.66/3,208,290.20 = 699,419.53/x
  3. Step 3: Cross multiply
    2,138,728.66x = 3,208,290.20 × 699,419.53
  4. Step 4: Simplify right side
    2,138,728.66x = 2,243,940,833,979.89
  5. Step 5: Solve for x
    x = 2,243,940,833,979.89/2,138,728.66
  6. Step 6: Final answer
    x = 1,049,193.79

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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.