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Finding the Fourth Proportional to 655,261.78, 904,290.36 and 368,800.42

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Solution

The fourth proportional to 655,261.78, 904,290.36 and 368,800.42 is: 508,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,261.78 : 904,290.36 = 368,800.42 : x
  2. Step 2: Convert to fraction form
    655,261.78/904,290.36 = 368,800.42/x
  3. Step 3: Cross multiply
    655,261.78x = 904,290.36 × 368,800.42
  4. Step 4: Simplify right side
    655,261.78x = 333,502,664,569.95
  5. Step 5: Solve for x
    x = 333,502,664,569.95/655,261.78
  6. Step 6: Final answer
    x = 508,960.96

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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.