Home / 3,939,138.70-5,436,052.78-2,220,259.20

Finding the Fourth Proportional to 3,939,138.70, 5,436,052.78 and 2,220,259.20

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Solution

The fourth proportional to 3,939,138.70, 5,436,052.78 and 2,220,259.20 is: 3,063,981.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,138.70 : 5,436,052.78 = 2,220,259.20 : x
  2. Step 2: Convert to fraction form
    3,939,138.70/5,436,052.78 = 2,220,259.20/x
  3. Step 3: Cross multiply
    3,939,138.70x = 5,436,052.78 × 2,220,259.20
  4. Step 4: Simplify right side
    3,939,138.70x = 12,069,446,196,480.58
  5. Step 5: Solve for x
    x = 12,069,446,196,480.58/3,939,138.70
  6. Step 6: Final answer
    x = 3,063,981.02

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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.