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Finding the Fourth Proportional to 655,262.48, 904,112.62 and 368,678

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Solution

The fourth proportional to 655,262.48, 904,112.62 and 368,678 is: 508,691.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,262.48 : 904,112.62 = 368,678 : x
  2. Step 2: Convert to fraction form
    655,262.48/904,112.62 = 368,678/x
  3. Step 3: Cross multiply
    655,262.48x = 904,112.62 × 368,678
  4. Step 4: Simplify right side
    655,262.48x = 333,326,432,516.36
  5. Step 5: Solve for x
    x = 333,326,432,516.36/655,262.48
  6. Step 6: Final answer
    x = 508,691.47

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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.