Home / 3,929,970.78-5,423,304.20-2,211,087.19

Finding the Fourth Proportional to 3,929,970.78, 5,423,304.20 and 2,211,087.19

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Solution

The fourth proportional to 3,929,970.78, 5,423,304.20 and 2,211,087.19 is: 3,051,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,970.78 : 5,423,304.20 = 2,211,087.19 : x
  2. Step 2: Convert to fraction form
    3,929,970.78/5,423,304.20 = 2,211,087.19/x
  3. Step 3: Cross multiply
    3,929,970.78x = 5,423,304.20 × 2,211,087.19
  4. Step 4: Simplify right side
    3,929,970.78x = 11,991,398,444,093.20
  5. Step 5: Solve for x
    x = 11,991,398,444,093.20/3,929,970.78
  6. Step 6: Final answer
    x = 3,051,269.11

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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.