Home / 1,378,378.15-2,067,696.88-405,743.07

Finding the Fourth Proportional to 1,378,378.15, 2,067,696.88 and 405,743.07

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Solution

The fourth proportional to 1,378,378.15, 2,067,696.88 and 405,743.07 is: 608,652.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,378.15 : 2,067,696.88 = 405,743.07 : x
  2. Step 2: Convert to fraction form
    1,378,378.15/2,067,696.88 = 405,743.07/x
  3. Step 3: Cross multiply
    1,378,378.15x = 2,067,696.88 × 405,743.07
  4. Step 4: Simplify right side
    1,378,378.15x = 838,953,679,920.62
  5. Step 5: Solve for x
    x = 838,953,679,920.62/1,378,378.15
  6. Step 6: Final answer
    x = 608,652.77

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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.