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Finding the Fourth Proportional to 526,793.37, 726,978.09 and 308,957.64

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Solution

The fourth proportional to 526,793.37, 726,978.09 and 308,957.64 is: 426,363.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,793.37 : 726,978.09 = 308,957.64 : x
  2. Step 2: Convert to fraction form
    526,793.37/726,978.09 = 308,957.64/x
  3. Step 3: Cross multiply
    526,793.37x = 726,978.09 × 308,957.64
  4. Step 4: Simplify right side
    526,793.37x = 224,605,435,018.11
  5. Step 5: Solve for x
    x = 224,605,435,018.11/526,793.37
  6. Step 6: Final answer
    x = 426,363.44

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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.