Home / 808,990,286.70-1,213,485,430.05-800,928,129.90

Finding the Fourth Proportional to 808,990,286.70, 1,213,485,430.05 and 800,928,129.90

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Solution

The fourth proportional to 808,990,286.70, 1,213,485,430.05 and 800,928,129.90 is: 1,201,392,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,990,286.70 : 1,213,485,430.05 = 800,928,129.90 : x
  2. Step 2: Convert to fraction form
    808,990,286.70/1,213,485,430.05 = 800,928,129.90/x
  3. Step 3: Cross multiply
    808,990,286.70x = 1,213,485,430.05 × 800,928,129.90
  4. Step 4: Simplify right side
    808,990,286.70x = 971,914,616,150,843,648
  5. Step 5: Solve for x
    x = 971,914,616,150,843,648/808,990,286.70
  6. Step 6: Final answer
    x = 1,201,392,194.85

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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.