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Finding the Fourth Proportional to 611,829.27, 844,459.44 and 339,990.63

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Solution

The fourth proportional to 611,829.27, 844,459.44 and 339,990.63 is: 469,262.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,829.27 : 844,459.44 = 339,990.63 : x
  2. Step 2: Convert to fraction form
    611,829.27/844,459.44 = 339,990.63/x
  3. Step 3: Cross multiply
    611,829.27x = 844,459.44 × 339,990.63
  4. Step 4: Simplify right side
    611,829.27x = 287,108,297,015.05
  5. Step 5: Solve for x
    x = 287,108,297,015.05/611,829.27
  6. Step 6: Final answer
    x = 469,262.11

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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.