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Finding the Fourth Proportional to 622,644.48, 933,953.76 and 422,464.32

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Solution

The fourth proportional to 622,644.48, 933,953.76 and 422,464.32 is: 633,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,644.48 : 933,953.76 = 422,464.32 : x
  2. Step 2: Convert to fraction form
    622,644.48/933,953.76 = 422,464.32/x
  3. Step 3: Cross multiply
    622,644.48x = 933,953.76 × 422,464.32
  4. Step 4: Simplify right side
    622,644.48x = 394,562,140,129.84
  5. Step 5: Solve for x
    x = 394,562,140,129.84/622,644.48
  6. Step 6: Final answer
    x = 633,687.69

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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.