Home / 3,929,708.42-5,422,996.78-2,187,340.23

Finding the Fourth Proportional to 3,929,708.42, 5,422,996.78 and 2,187,340.23

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Solution

The fourth proportional to 3,929,708.42, 5,422,996.78 and 2,187,340.23 is: 3,018,529.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,708.42 : 5,422,996.78 = 2,187,340.23 : x
  2. Step 2: Convert to fraction form
    3,929,708.42/5,422,996.78 = 2,187,340.23/x
  3. Step 3: Cross multiply
    3,929,708.42x = 5,422,996.78 × 2,187,340.23
  4. Step 4: Simplify right side
    3,929,708.42x = 11,861,939,018,586.11
  5. Step 5: Solve for x
    x = 11,861,939,018,586.11/3,929,708.42
  6. Step 6: Final answer
    x = 3,018,529.05

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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.