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Finding the Fourth Proportional to 661,119.98, 991,098.36 and 262,040.88

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Solution

The fourth proportional to 661,119.98, 991,098.36 and 262,040.88 is: 392,830.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,119.98 : 991,098.36 = 262,040.88 : x
  2. Step 2: Convert to fraction form
    661,119.98/991,098.36 = 262,040.88/x
  3. Step 3: Cross multiply
    661,119.98x = 991,098.36 × 262,040.88
  4. Step 4: Simplify right side
    661,119.98x = 259,708,286,420.96
  5. Step 5: Solve for x
    x = 259,708,286,420.96/661,119.98
  6. Step 6: Final answer
    x = 392,830.79

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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.