Home / 1,265,145.32-1,745,849.22-756,128.36

Finding the Fourth Proportional to 1,265,145.32, 1,745,849.22 and 756,128.36

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Solution

The fourth proportional to 1,265,145.32, 1,745,849.22 and 756,128.36 is: 1,043,426.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,145.32 : 1,745,849.22 = 756,128.36 : x
  2. Step 2: Convert to fraction form
    1,265,145.32/1,745,849.22 = 756,128.36/x
  3. Step 3: Cross multiply
    1,265,145.32x = 1,745,849.22 × 756,128.36
  4. Step 4: Simplify right side
    1,265,145.32x = 1,320,086,107,525.88
  5. Step 5: Solve for x
    x = 1,320,086,107,525.88/1,265,145.32
  6. Step 6: Final answer
    x = 1,043,426.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.