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Finding the Fourth Proportional to 635,915.20, 877,371.60 and 381,173.44

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Solution

The fourth proportional to 635,915.20, 877,371.60 and 381,173.44 is: 525,904.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,915.20 : 877,371.60 = 381,173.44 : x
  2. Step 2: Convert to fraction form
    635,915.20/877,371.60 = 381,173.44/x
  3. Step 3: Cross multiply
    635,915.20x = 877,371.60 × 381,173.44
  4. Step 4: Simplify right side
    635,915.20x = 334,430,750,930.30
  5. Step 5: Solve for x
    x = 334,430,750,930.30/635,915.20
  6. Step 6: Final answer
    x = 525,904.63

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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.