Home / 1,378,992,911.85-2,068,489,367.78-1,206,806,027.85

Finding the Fourth Proportional to 1,378,992,911.85, 2,068,489,367.78 and 1,206,806,027.85

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Solution

The fourth proportional to 1,378,992,911.85, 2,068,489,367.78 and 1,206,806,027.85 is: 1,810,209,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,992,911.85 : 2,068,489,367.78 = 1,206,806,027.85 : x
  2. Step 2: Convert to fraction form
    1,378,992,911.85/2,068,489,367.78 = 1,206,806,027.85/x
  3. Step 3: Cross multiply
    1,378,992,911.85x = 2,068,489,367.78 × 1,206,806,027.85
  4. Step 4: Simplify right side
    1,378,992,911.85x = 2,496,265,437,574,505,472
  5. Step 5: Solve for x
    x = 2,496,265,437,574,505,472/1,378,992,911.85
  6. Step 6: Final answer
    x = 1,810,209,041.78

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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.