Home / 1,981,012.80-2,971,519.20-718,676.40

Finding the Fourth Proportional to 1,981,012.80, 2,971,519.20 and 718,676.40

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Solution

The fourth proportional to 1,981,012.80, 2,971,519.20 and 718,676.40 is: 1,078,014.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,012.80 : 2,971,519.20 = 718,676.40 : x
  2. Step 2: Convert to fraction form
    1,981,012.80/2,971,519.20 = 718,676.40/x
  3. Step 3: Cross multiply
    1,981,012.80x = 2,971,519.20 × 718,676.40
  4. Step 4: Simplify right side
    1,981,012.80x = 2,135,560,721,186.88
  5. Step 5: Solve for x
    x = 2,135,560,721,186.88/1,981,012.80
  6. Step 6: Final answer
    x = 1,078,014.60

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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.