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Finding the Fourth Proportional to 538,669.20, 806,448.60 and 328,717.20

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Solution

The fourth proportional to 538,669.20, 806,448.60 and 328,717.20 is: 492,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,669.20 : 806,448.60 = 328,717.20 : x
  2. Step 2: Convert to fraction form
    538,669.20/806,448.60 = 328,717.20/x
  3. Step 3: Cross multiply
    538,669.20x = 806,448.60 × 328,717.20
  4. Step 4: Simplify right side
    538,669.20x = 265,093,525,735.92
  5. Step 5: Solve for x
    x = 265,093,525,735.92/538,669.20
  6. Step 6: Final answer
    x = 492,126.76

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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.