Home / 721,954.88-1,081,748.64-511,214.48

Finding the Fourth Proportional to 721,954.88, 1,081,748.64 and 511,214.48

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Solution

The fourth proportional to 721,954.88, 1,081,748.64 and 511,214.48 is: 765,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,954.88 : 1,081,748.64 = 511,214.48 : x
  2. Step 2: Convert to fraction form
    721,954.88/1,081,748.64 = 511,214.48/x
  3. Step 3: Cross multiply
    721,954.88x = 1,081,748.64 × 511,214.48
  4. Step 4: Simplify right side
    721,954.88x = 553,005,568,488.31
  5. Step 5: Solve for x
    x = 553,005,568,488.31/721,954.88
  6. Step 6: Final answer
    x = 765,983.56

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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.