Home / 1,310,687.21-1,965,373.31-763,756.78

Finding the Fourth Proportional to 1,310,687.21, 1,965,373.31 and 763,756.78

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Solution

The fourth proportional to 1,310,687.21, 1,965,373.31 and 763,756.78 is: 1,145,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,687.21 : 1,965,373.31 = 763,756.78 : x
  2. Step 2: Convert to fraction form
    1,310,687.21/1,965,373.31 = 763,756.78/x
  3. Step 3: Cross multiply
    1,310,687.21x = 1,965,373.31 × 763,756.78
  4. Step 4: Simplify right side
    1,310,687.21x = 1,501,067,192,245.56
  5. Step 5: Solve for x
    x = 1,501,067,192,245.56/1,310,687.21
  6. Step 6: Final answer
    x = 1,145,252.03

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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.