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Finding the Fourth Proportional to 655,067.69, 904,034.61 and 396,967.23

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Solution

The fourth proportional to 655,067.69, 904,034.61 and 396,967.23 is: 547,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,067.69 : 904,034.61 = 396,967.23 : x
  2. Step 2: Convert to fraction form
    655,067.69/904,034.61 = 396,967.23/x
  3. Step 3: Cross multiply
    655,067.69x = 904,034.61 × 396,967.23
  4. Step 4: Simplify right side
    655,067.69x = 358,872,114,955.83
  5. Step 5: Solve for x
    x = 358,872,114,955.83/655,067.69
  6. Step 6: Final answer
    x = 547,839.75

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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.