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Finding the Fourth Proportional to 395,409.78, 591,736.23 and 323,501.22

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Solution

The fourth proportional to 395,409.78, 591,736.23 and 323,501.22 is: 484,124.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,409.78 : 591,736.23 = 323,501.22 : x
  2. Step 2: Convert to fraction form
    395,409.78/591,736.23 = 323,501.22/x
  3. Step 3: Cross multiply
    395,409.78x = 591,736.23 × 323,501.22
  4. Step 4: Simplify right side
    395,409.78x = 191,427,392,323.20
  5. Step 5: Solve for x
    x = 191,427,392,323.20/395,409.78
  6. Step 6: Final answer
    x = 484,124.07

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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.