Home / 1,212,159,499.52-1,818,040,183.68-521,880,915.20

Finding the Fourth Proportional to 1,212,159,499.52, 1,818,040,183.68 and 521,880,915.20

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Solution

The fourth proportional to 1,212,159,499.52, 1,818,040,183.68 and 521,880,915.20 is: 782,735,667.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,159,499.52 : 1,818,040,183.68 = 521,880,915.20 : x
  2. Step 2: Convert to fraction form
    1,212,159,499.52/1,818,040,183.68 = 521,880,915.20/x
  3. Step 3: Cross multiply
    1,212,159,499.52x = 1,818,040,183.68 × 521,880,915.20
  4. Step 4: Simplify right side
    1,212,159,499.52x = 948,800,474,929,294,464
  5. Step 5: Solve for x
    x = 948,800,474,929,294,464/1,212,159,499.52
  6. Step 6: Final answer
    x = 782,735,667.46

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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.