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Finding the Fourth Proportional to 622,910.67, 859,643.19 and 347,268.45

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Solution

The fourth proportional to 622,910.67, 859,643.19 and 347,268.45 is: 479,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,910.67 : 859,643.19 = 347,268.45 : x
  2. Step 2: Convert to fraction form
    622,910.67/859,643.19 = 347,268.45/x
  3. Step 3: Cross multiply
    622,910.67x = 859,643.19 × 347,268.45
  4. Step 4: Simplify right side
    622,910.67x = 298,526,958,144.36
  5. Step 5: Solve for x
    x = 298,526,958,144.36/622,910.67
  6. Step 6: Final answer
    x = 479,245.22

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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.