Home / 1,378,828.12-1,902,160.92-805,610.56

Finding the Fourth Proportional to 1,378,828.12, 1,902,160.92 and 805,610.56

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Solution

The fourth proportional to 1,378,828.12, 1,902,160.92 and 805,610.56 is: 1,111,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,828.12 : 1,902,160.92 = 805,610.56 : x
  2. Step 2: Convert to fraction form
    1,378,828.12/1,902,160.92 = 805,610.56/x
  3. Step 3: Cross multiply
    1,378,828.12x = 1,902,160.92 × 805,610.56
  4. Step 4: Simplify right side
    1,378,828.12x = 1,532,400,923,971.32
  5. Step 5: Solve for x
    x = 1,532,400,923,971.32/1,378,828.12
  6. Step 6: Final answer
    x = 1,111,379.22

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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.