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Finding the Fourth Proportional to 1,436,978.44, 1,982,984.79 and 792,425.80

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Solution

The fourth proportional to 1,436,978.44, 1,982,984.79 and 792,425.80 is: 1,093,522.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436,978.44 : 1,982,984.79 = 792,425.80 : x
  2. Step 2: Convert to fraction form
    1,436,978.44/1,982,984.79 = 792,425.80/x
  3. Step 3: Cross multiply
    1,436,978.44x = 1,982,984.79 × 792,425.80
  4. Step 4: Simplify right side
    1,436,978.44x = 1,571,368,308,603.58
  5. Step 5: Solve for x
    x = 1,571,368,308,603.58/1,436,978.44
  6. Step 6: Final answer
    x = 1,093,522.54

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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.