Home / 1,378,378.94-2,067,698.07-405,743.86

Finding the Fourth Proportional to 1,378,378.94, 2,067,698.07 and 405,743.86

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Solution

The fourth proportional to 1,378,378.94, 2,067,698.07 and 405,743.86 is: 608,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,378.94 : 2,067,698.07 = 405,743.86 : x
  2. Step 2: Convert to fraction form
    1,378,378.94/2,067,698.07 = 405,743.86/x
  3. Step 3: Cross multiply
    1,378,378.94x = 2,067,698.07 × 405,743.86
  4. Step 4: Simplify right side
    1,378,378.94x = 838,955,804,592.45
  5. Step 5: Solve for x
    x = 838,955,804,592.45/1,378,378.94
  6. Step 6: Final answer
    x = 608,653.96

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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.