Home / 3,928,002,207.60-5,420,566,209.60-2,143,868,449.44

Finding the Fourth Proportional to 3,928,002,207.60, 5,420,566,209.60 and 2,143,868,449.44

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Solution

The fourth proportional to 3,928,002,207.60, 5,420,566,209.60 and 2,143,868,449.44 is: 2,958,496,523.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,002,207.60 : 5,420,566,209.60 = 2,143,868,449.44 : x
  2. Step 2: Convert to fraction form
    3,928,002,207.60/5,420,566,209.60 = 2,143,868,449.44/x
  3. Step 3: Cross multiply
    3,928,002,207.60x = 5,420,566,209.60 × 2,143,868,449.44
  4. Step 4: Simplify right side
    3,928,002,207.60x = 11,620,980,874,862,010,368
  5. Step 5: Solve for x
    x = 11,620,980,874,862,010,368/3,928,002,207.60
  6. Step 6: Final answer
    x = 2,958,496,523.34

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Double scale
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1.5x scale

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.