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Finding the Fourth Proportional to 538,739.80, 809,664.90 and 529,408.60

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Solution

The fourth proportional to 538,739.80, 809,664.90 and 529,408.60 is: 795,641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,739.80 : 809,664.90 = 529,408.60 : x
  2. Step 2: Convert to fraction form
    538,739.80/809,664.90 = 529,408.60/x
  3. Step 3: Cross multiply
    538,739.80x = 809,664.90 × 529,408.60
  4. Step 4: Simplify right side
    538,739.80x = 428,643,561,178.14
  5. Step 5: Solve for x
    x = 428,643,561,178.14/538,739.80
  6. Step 6: Final answer
    x = 795,641.16

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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.