Home / 1,378,722-1,902,636.36-806,243.16

Finding the Fourth Proportional to 1,378,722, 1,902,636.36 and 806,243.16

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Solution

The fourth proportional to 1,378,722, 1,902,636.36 and 806,243.16 is: 1,112,615.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,722 : 1,902,636.36 = 806,243.16 : x
  2. Step 2: Convert to fraction form
    1,378,722/1,902,636.36 = 806,243.16/x
  3. Step 3: Cross multiply
    1,378,722x = 1,902,636.36 × 806,243.16
  4. Step 4: Simplify right side
    1,378,722x = 1,533,987,551,217.30
  5. Step 5: Solve for x
    x = 1,533,987,551,217.30/1,378,722
  6. Step 6: Final answer
    x = 1,112,615.56

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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.