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Finding the Fourth Proportional to 611,644.31, 844,069.15 and 343,372.31

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Solution

The fourth proportional to 611,644.31, 844,069.15 and 343,372.31 is: 473,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,644.31 : 844,069.15 = 343,372.31 : x
  2. Step 2: Convert to fraction form
    611,644.31/844,069.15 = 343,372.31/x
  3. Step 3: Cross multiply
    611,644.31x = 844,069.15 × 343,372.31
  4. Step 4: Simplify right side
    611,644.31x = 289,829,976,374.63
  5. Step 5: Solve for x
    x = 289,829,976,374.63/611,644.31
  6. Step 6: Final answer
    x = 473,853.79

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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.