Home / 3,928,820.89-5,421,479.73-2,209,609.26

Finding the Fourth Proportional to 3,928,820.89, 5,421,479.73 and 2,209,609.26

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Solution

The fourth proportional to 3,928,820.89, 5,421,479.73 and 2,209,609.26 is: 3,049,095.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,820.89 : 5,421,479.73 = 2,209,609.26 : x
  2. Step 2: Convert to fraction form
    3,928,820.89/5,421,479.73 = 2,209,609.26/x
  3. Step 3: Cross multiply
    3,928,820.89x = 5,421,479.73 × 2,209,609.26
  4. Step 4: Simplify right side
    3,928,820.89x = 11,979,351,814,310.30
  5. Step 5: Solve for x
    x = 11,979,351,814,310.30/3,928,820.89
  6. Step 6: Final answer
    x = 3,049,095.94

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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.