Home / 1,209,760.07-1,669,405.28-665,791.88

Finding the Fourth Proportional to 1,209,760.07, 1,669,405.28 and 665,791.88

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Solution

The fourth proportional to 1,209,760.07, 1,669,405.28 and 665,791.88 is: 918,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,760.07 : 1,669,405.28 = 665,791.88 : x
  2. Step 2: Convert to fraction form
    1,209,760.07/1,669,405.28 = 665,791.88/x
  3. Step 3: Cross multiply
    1,209,760.07x = 1,669,405.28 × 665,791.88
  4. Step 4: Simplify right side
    1,209,760.07x = 1,111,476,468,177.14
  5. Step 5: Solve for x
    x = 1,111,476,468,177.14/1,209,760.07
  6. Step 6: Final answer
    x = 918,757.78

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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.