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Finding the Fourth Proportional to 871,978,254.12, 1,203,359,049 and 475,522,940.88

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Solution

The fourth proportional to 871,978,254.12, 1,203,359,049 and 475,522,940.88 is: 656,237,505.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,978,254.12 : 1,203,359,049 = 475,522,940.88 : x
  2. Step 2: Convert to fraction form
    871,978,254.12/1,203,359,049 = 475,522,940.88/x
  3. Step 3: Cross multiply
    871,978,254.12x = 1,203,359,049 × 475,522,940.88
  4. Step 4: Simplify right side
    871,978,254.12x = 572,224,833,915,040,000
  5. Step 5: Solve for x
    x = 572,224,833,915,040,000/871,978,254.12
  6. Step 6: Final answer
    x = 656,237,505.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.