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Finding the Fourth Proportional to 655,257.78, 904,284.83 and 368,796.42

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Solution

The fourth proportional to 655,257.78, 904,284.83 and 368,796.42 is: 508,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,257.78 : 904,284.83 = 368,796.42 : x
  2. Step 2: Convert to fraction form
    655,257.78/904,284.83 = 368,796.42/x
  3. Step 3: Cross multiply
    655,257.78x = 904,284.83 × 368,796.42
  4. Step 4: Simplify right side
    655,257.78x = 333,497,007,964.31
  5. Step 5: Solve for x
    x = 333,497,007,964.31/655,257.78
  6. Step 6: Final answer
    x = 508,955.43

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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.