Home / 818,883,942.30-1,228,325,913.45-543,384,927.90

Finding the Fourth Proportional to 818,883,942.30, 1,228,325,913.45 and 543,384,927.90

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Solution

The fourth proportional to 818,883,942.30, 1,228,325,913.45 and 543,384,927.90 is: 815,077,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,883,942.30 : 1,228,325,913.45 = 543,384,927.90 : x
  2. Step 2: Convert to fraction form
    818,883,942.30/1,228,325,913.45 = 543,384,927.90/x
  3. Step 3: Cross multiply
    818,883,942.30x = 1,228,325,913.45 × 543,384,927.90
  4. Step 4: Simplify right side
    818,883,942.30x = 667,453,787,917,729,920
  5. Step 5: Solve for x
    x = 667,453,787,917,729,920/818,883,942.30
  6. Step 6: Final answer
    x = 815,077,391.85

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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.