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Finding the Fourth Proportional to 611,905.41, 844,423.38 and 339,967.46

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Solution

The fourth proportional to 611,905.41, 844,423.38 and 339,967.46 is: 469,151.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,905.41 : 844,423.38 = 339,967.46 : x
  2. Step 2: Convert to fraction form
    611,905.41/844,423.38 = 339,967.46/x
  3. Step 3: Cross multiply
    611,905.41x = 844,423.38 × 339,967.46
  4. Step 4: Simplify right side
    611,905.41x = 287,076,473,657.73
  5. Step 5: Solve for x
    x = 287,076,473,657.73/611,905.41
  6. Step 6: Final answer
    x = 469,151.72

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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.