Home / 3,929,986.54-5,423,343.09-2,187,628.30

Finding the Fourth Proportional to 3,929,986.54, 5,423,343.09 and 2,187,628.30

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Solution

The fourth proportional to 3,929,986.54, 5,423,343.09 and 2,187,628.30 is: 3,018,905.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,986.54 : 5,423,343.09 = 2,187,628.30 : x
  2. Step 2: Convert to fraction form
    3,929,986.54/5,423,343.09 = 2,187,628.30/x
  3. Step 3: Cross multiply
    3,929,986.54x = 5,423,343.09 × 2,187,628.30
  4. Step 4: Simplify right side
    3,929,986.54x = 11,864,258,824,293.45
  5. Step 5: Solve for x
    x = 11,864,258,824,293.45/3,929,986.54
  6. Step 6: Final answer
    x = 3,018,905.71

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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.