Home / 1,285,467,072.30-1,928,200,608.45-672,239,270.70

Finding the Fourth Proportional to 1,285,467,072.30, 1,928,200,608.45 and 672,239,270.70

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Solution

The fourth proportional to 1,285,467,072.30, 1,928,200,608.45 and 672,239,270.70 is: 1,008,358,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,467,072.30 : 1,928,200,608.45 = 672,239,270.70 : x
  2. Step 2: Convert to fraction form
    1,285,467,072.30/1,928,200,608.45 = 672,239,270.70/x
  3. Step 3: Cross multiply
    1,285,467,072.30x = 1,928,200,608.45 × 672,239,270.70
  4. Step 4: Simplify right side
    1,285,467,072.30x = 1,296,212,170,787,724,288
  5. Step 5: Solve for x
    x = 1,296,212,170,787,724,288/1,285,467,072.30
  6. Step 6: Final answer
    x = 1,008,358,906.05

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Double scale
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Similar ratio
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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.