Home / 1,073,087,999.70-1,609,631,999.55-800,990,207.70

Finding the Fourth Proportional to 1,073,087,999.70, 1,609,631,999.55 and 800,990,207.70

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Solution

The fourth proportional to 1,073,087,999.70, 1,609,631,999.55 and 800,990,207.70 is: 1,201,485,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073,087,999.70 : 1,609,631,999.55 = 800,990,207.70 : x
  2. Step 2: Convert to fraction form
    1,073,087,999.70/1,609,631,999.55 = 800,990,207.70/x
  3. Step 3: Cross multiply
    1,073,087,999.70x = 1,609,631,999.55 × 800,990,207.70
  4. Step 4: Simplify right side
    1,073,087,999.70x = 1,289,299,469,640,120,832
  5. Step 5: Solve for x
    x = 1,289,299,469,640,120,832/1,073,087,999.70
  6. Step 6: Final answer
    x = 1,201,485,311.55

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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.