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Finding the Fourth Proportional to 615,470, 849,377.94 and 347,198

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Solution

The fourth proportional to 615,470, 849,377.94 and 347,198 is: 479,149.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,470 : 849,377.94 = 347,198 : x
  2. Step 2: Convert to fraction form
    615,470/849,377.94 = 347,198/x
  3. Step 3: Cross multiply
    615,470x = 849,377.94 × 347,198
  4. Step 4: Simplify right side
    615,470x = 294,902,322,012.12
  5. Step 5: Solve for x
    x = 294,902,322,012.12/615,470
  6. Step 6: Final answer
    x = 479,149.79

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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.