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Finding the Fourth Proportional to 666,650.78, 1,000,100.70 and 267,322.81

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Solution

The fourth proportional to 666,650.78, 1,000,100.70 and 267,322.81 is: 401,034.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,650.78 : 1,000,100.70 = 267,322.81 : x
  2. Step 2: Convert to fraction form
    666,650.78/1,000,100.70 = 267,322.81/x
  3. Step 3: Cross multiply
    666,650.78x = 1,000,100.70 × 267,322.81
  4. Step 4: Simplify right side
    666,650.78x = 267,349,729,406.97
  5. Step 5: Solve for x
    x = 267,349,729,406.97/666,650.78
  6. Step 6: Final answer
    x = 401,034.15

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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.