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Finding the Fourth Proportional to 522,795.52, 721,208.64 and 379,240.96

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Solution

The fourth proportional to 522,795.52, 721,208.64 and 379,240.96 is: 523,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,795.52 : 721,208.64 = 379,240.96 : x
  2. Step 2: Convert to fraction form
    522,795.52/721,208.64 = 379,240.96/x
  3. Step 3: Cross multiply
    522,795.52x = 721,208.64 × 379,240.96
  4. Step 4: Simplify right side
    522,795.52x = 273,511,856,993.89
  5. Step 5: Solve for x
    x = 273,511,856,993.89/522,795.52
  6. Step 6: Final answer
    x = 523,171.77

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1.5x scale

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.