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Finding the Fourth Proportional to 1,383,397, 1,909,087.94 and 747,493

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Solution

The fourth proportional to 1,383,397, 1,909,087.94 and 747,493 is: 1,031,540.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,397 : 1,909,087.94 = 747,493 : x
  2. Step 2: Convert to fraction form
    1,383,397/1,909,087.94 = 747,493/x
  3. Step 3: Cross multiply
    1,383,397x = 1,909,087.94 × 747,493
  4. Step 4: Simplify right side
    1,383,397x = 1,427,029,871,534.42
  5. Step 5: Solve for x
    x = 1,427,029,871,534.42/1,383,397
  6. Step 6: Final answer
    x = 1,031,540.38

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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.