Home / 818,883,921.30-1,228,325,881.95-543,384,906.90

Finding the Fourth Proportional to 818,883,921.30, 1,228,325,881.95 and 543,384,906.90

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Solution

The fourth proportional to 818,883,921.30, 1,228,325,881.95 and 543,384,906.90 is: 815,077,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,883,921.30 : 1,228,325,881.95 = 543,384,906.90 : x
  2. Step 2: Convert to fraction form
    818,883,921.30/1,228,325,881.95 = 543,384,906.90/x
  3. Step 3: Cross multiply
    818,883,921.30x = 1,228,325,881.95 × 543,384,906.90
  4. Step 4: Simplify right side
    818,883,921.30x = 667,453,745,006,261,120
  5. Step 5: Solve for x
    x = 667,453,745,006,261,120/818,883,921.30
  6. Step 6: Final answer
    x = 815,077,360.35

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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.