Home / 1,419,389.12-1,958,719.32-1,305,129.31

Finding the Fourth Proportional to 1,419,389.12, 1,958,719.32 and 1,305,129.31

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Solution

The fourth proportional to 1,419,389.12, 1,958,719.32 and 1,305,129.31 is: 1,801,043.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,389.12 : 1,958,719.32 = 1,305,129.31 : x
  2. Step 2: Convert to fraction form
    1,419,389.12/1,958,719.32 = 1,305,129.31/x
  3. Step 3: Cross multiply
    1,419,389.12x = 1,958,719.32 × 1,305,129.31
  4. Step 4: Simplify right side
    1,419,389.12x = 2,556,381,989,698.47
  5. Step 5: Solve for x
    x = 2,556,381,989,698.47/1,419,389.12
  6. Step 6: Final answer
    x = 1,801,043.81

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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.