Home / 2,129,479-3,192,643.86-1,287,843.64

Finding the Fourth Proportional to 2,129,479, 3,192,643.86 and 1,287,843.64

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Solution

The fourth proportional to 2,129,479, 3,192,643.86 and 1,287,843.64 is: 1,930,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,479 : 3,192,643.86 = 1,287,843.64 : x
  2. Step 2: Convert to fraction form
    2,129,479/3,192,643.86 = 1,287,843.64/x
  3. Step 3: Cross multiply
    2,129,479x = 3,192,643.86 × 1,287,843.64
  4. Step 4: Simplify right side
    2,129,479x = 4,111,626,089,886.05
  5. Step 5: Solve for x
    x = 4,111,626,089,886.05/2,129,479
  6. Step 6: Final answer
    x = 1,930,813.17

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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.