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Finding the Fourth Proportional to 528,077.20, 792,018.60 and 328,039.60

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Solution

The fourth proportional to 528,077.20, 792,018.60 and 328,039.60 is: 491,999.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,077.20 : 792,018.60 = 328,039.60 : x
  2. Step 2: Convert to fraction form
    528,077.20/792,018.60 = 328,039.60/x
  3. Step 3: Cross multiply
    528,077.20x = 792,018.60 × 328,039.60
  4. Step 4: Simplify right side
    528,077.20x = 259,813,464,736.56
  5. Step 5: Solve for x
    x = 259,813,464,736.56/528,077.20
  6. Step 6: Final answer
    x = 491,999.02

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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.