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Finding the Fourth Proportional to 529,940.40, 794,910.60 and 361,978.80

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Solution

The fourth proportional to 529,940.40, 794,910.60 and 361,978.80 is: 542,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,940.40 : 794,910.60 = 361,978.80 : x
  2. Step 2: Convert to fraction form
    529,940.40/794,910.60 = 361,978.80/x
  3. Step 3: Cross multiply
    529,940.40x = 794,910.60 × 361,978.80
  4. Step 4: Simplify right side
    529,940.40x = 287,740,785,095.28
  5. Step 5: Solve for x
    x = 287,740,785,095.28/529,940.40
  6. Step 6: Final answer
    x = 542,968.20

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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.