Home / 1,131,375,660.62-1,561,434,331.83-685,325,936.20

Finding the Fourth Proportional to 1,131,375,660.62, 1,561,434,331.83 and 685,325,936.20

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Solution

The fourth proportional to 1,131,375,660.62, 1,561,434,331.83 and 685,325,936.20 is: 945,832,125.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,375,660.62 : 1,561,434,331.83 = 685,325,936.20 : x
  2. Step 2: Convert to fraction form
    1,131,375,660.62/1,561,434,331.83 = 685,325,936.20/x
  3. Step 3: Cross multiply
    1,131,375,660.62x = 1,561,434,331.83 × 685,325,936.20
  4. Step 4: Simplify right side
    1,131,375,660.62x = 1,070,091,445,282,872,576
  5. Step 5: Solve for x
    x = 1,070,091,445,282,872,576/1,131,375,660.62
  6. Step 6: Final answer
    x = 945,832,125.02

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Half scale
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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.