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Finding the Fourth Proportional to 805,620, 1,208,172.02 and 265,755.46

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Solution

The fourth proportional to 805,620, 1,208,172.02 and 265,755.46 is: 398,548.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,620 : 1,208,172.02 = 265,755.46 : x
  2. Step 2: Convert to fraction form
    805,620/1,208,172.02 = 265,755.46/x
  3. Step 3: Cross multiply
    805,620x = 1,208,172.02 × 265,755.46
  4. Step 4: Simplify right side
    805,620x = 321,078,310,934.23
  5. Step 5: Solve for x
    x = 321,078,310,934.23/805,620
  6. Step 6: Final answer
    x = 398,548.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.