Home / 1,387,215.90-1,914,299.22-871,239.42

Finding the Fourth Proportional to 1,387,215.90, 1,914,299.22 and 871,239.42

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Solution

The fourth proportional to 1,387,215.90, 1,914,299.22 and 871,239.42 is: 1,202,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,215.90 : 1,914,299.22 = 871,239.42 : x
  2. Step 2: Convert to fraction form
    1,387,215.90/1,914,299.22 = 871,239.42/x
  3. Step 3: Cross multiply
    1,387,215.90x = 1,914,299.22 × 871,239.42
  4. Step 4: Simplify right side
    1,387,215.90x = 1,667,812,942,139.25
  5. Step 5: Solve for x
    x = 1,667,812,942,139.25/1,387,215.90
  6. Step 6: Final answer
    x = 1,202,273.52

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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.