Home / 1,378,385.19-2,067,707.43-405,750.11

Finding the Fourth Proportional to 1,378,385.19, 2,067,707.43 and 405,750.11

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Solution

The fourth proportional to 1,378,385.19, 2,067,707.43 and 405,750.11 is: 608,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,385.19 : 2,067,707.43 = 405,750.11 : x
  2. Step 2: Convert to fraction form
    1,378,385.19/2,067,707.43 = 405,750.11/x
  3. Step 3: Cross multiply
    1,378,385.19x = 2,067,707.43 × 405,750.11
  4. Step 4: Simplify right side
    1,378,385.19x = 838,972,515,141.57
  5. Step 5: Solve for x
    x = 838,972,515,141.57/1,378,385.19
  6. Step 6: Final answer
    x = 608,663.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.