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Finding the Fourth Proportional to 561,343.78, 774,654.42 and 306,696.79

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Solution

The fourth proportional to 561,343.78, 774,654.42 and 306,696.79 is: 423,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,343.78 : 774,654.42 = 306,696.79 : x
  2. Step 2: Convert to fraction form
    561,343.78/774,654.42 = 306,696.79/x
  3. Step 3: Cross multiply
    561,343.78x = 774,654.42 × 306,696.79
  4. Step 4: Simplify right side
    561,343.78x = 237,584,026,091.74
  5. Step 5: Solve for x
    x = 237,584,026,091.74/561,343.78
  6. Step 6: Final answer
    x = 423,241.57

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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.