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Finding the Fourth Proportional to 655,138.44, 904,017.78 and 368,757

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Solution

The fourth proportional to 655,138.44, 904,017.78 and 368,757 is: 508,843.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,138.44 : 904,017.78 = 368,757 : x
  2. Step 2: Convert to fraction form
    655,138.44/904,017.78 = 368,757/x
  3. Step 3: Cross multiply
    655,138.44x = 904,017.78 × 368,757
  4. Step 4: Simplify right side
    655,138.44x = 333,362,884,499.46
  5. Step 5: Solve for x
    x = 333,362,884,499.46/655,138.44
  6. Step 6: Final answer
    x = 508,843.42

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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.