Home / 862,974,512.89-1,294,485,887.84-280,708,760.57

Finding the Fourth Proportional to 862,974,512.89, 1,294,485,887.84 and 280,708,760.57

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Solution

The fourth proportional to 862,974,512.89, 1,294,485,887.84 and 280,708,760.57 is: 421,070,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,974,512.89 : 1,294,485,887.84 = 280,708,760.57 : x
  2. Step 2: Convert to fraction form
    862,974,512.89/1,294,485,887.84 = 280,708,760.57/x
  3. Step 3: Cross multiply
    862,974,512.89x = 1,294,485,887.84 × 280,708,760.57
  4. Step 4: Simplify right side
    862,974,512.89x = 363,373,529,143,046,464
  5. Step 5: Solve for x
    x = 363,373,529,143,046,464/862,974,512.89
  6. Step 6: Final answer
    x = 421,070,986.13

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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.