Home / 1,786,230.42-2,679,433.17-721,139.58

Finding the Fourth Proportional to 1,786,230.42, 2,679,433.17 and 721,139.58

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Solution

The fourth proportional to 1,786,230.42, 2,679,433.17 and 721,139.58 is: 1,081,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,230.42 : 2,679,433.17 = 721,139.58 : x
  2. Step 2: Convert to fraction form
    1,786,230.42/2,679,433.17 = 721,139.58/x
  3. Step 3: Cross multiply
    1,786,230.42x = 2,679,433.17 × 721,139.58
  4. Step 4: Simplify right side
    1,786,230.42x = 1,932,245,310,851.87
  5. Step 5: Solve for x
    x = 1,932,245,310,851.87/1,786,230.42
  6. Step 6: Final answer
    x = 1,081,744.71

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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.