Home / 1,291,248,469.80-1,936,872,704.70-1,191,479,279.40

Finding the Fourth Proportional to 1,291,248,469.80, 1,936,872,704.70 and 1,191,479,279.40

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Solution

The fourth proportional to 1,291,248,469.80, 1,936,872,704.70 and 1,191,479,279.40 is: 1,787,218,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,248,469.80 : 1,936,872,704.70 = 1,191,479,279.40 : x
  2. Step 2: Convert to fraction form
    1,291,248,469.80/1,936,872,704.70 = 1,191,479,279.40/x
  3. Step 3: Cross multiply
    1,291,248,469.80x = 1,936,872,704.70 × 1,191,479,279.40
  4. Step 4: Simplify right side
    1,291,248,469.80x = 2,307,743,694,485,485,056
  5. Step 5: Solve for x
    x = 2,307,743,694,485,485,056/1,291,248,469.80
  6. Step 6: Final answer
    x = 1,787,218,919.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.