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Finding the Fourth Proportional to 655,449.31, 904,537.16 and 368,979.85

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Solution

The fourth proportional to 655,449.31, 904,537.16 and 368,979.85 is: 509,201.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,449.31 : 904,537.16 = 368,979.85 : x
  2. Step 2: Convert to fraction form
    655,449.31/904,537.16 = 368,979.85/x
  3. Step 3: Cross multiply
    655,449.31x = 904,537.16 × 368,979.85
  4. Step 4: Simplify right side
    655,449.31x = 333,755,983,771.33
  5. Step 5: Solve for x
    x = 333,755,983,771.33/655,449.31
  6. Step 6: Final answer
    x = 509,201.82

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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.