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Finding the Fourth Proportional to 611,617.64, 844,021.62 and 339,675.12

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Solution

The fourth proportional to 611,617.64, 844,021.62 and 339,675.12 is: 468,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,617.64 : 844,021.62 = 339,675.12 : x
  2. Step 2: Convert to fraction form
    611,617.64/844,021.62 = 339,675.12/x
  3. Step 3: Cross multiply
    611,617.64x = 844,021.62 × 339,675.12
  4. Step 4: Simplify right side
    611,617.64x = 286,693,145,056.09
  5. Step 5: Solve for x
    x = 286,693,145,056.09/611,617.64
  6. Step 6: Final answer
    x = 468,745.71

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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.