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Finding the Fourth Proportional to 611,907.41, 844,426.14 and 339,969.47

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Solution

The fourth proportional to 611,907.41, 844,426.14 and 339,969.47 is: 469,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,907.41 : 844,426.14 = 339,969.47 : x
  2. Step 2: Convert to fraction form
    611,907.41/844,426.14 = 339,969.47/x
  3. Step 3: Cross multiply
    611,907.41x = 844,426.14 × 339,969.47
  4. Step 4: Simplify right side
    611,907.41x = 287,079,101,347.97
  5. Step 5: Solve for x
    x = 287,079,101,347.97/611,907.41
  6. Step 6: Final answer
    x = 469,154.48

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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.