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Finding the Fourth Proportional to 655,243.39, 904,514.88 and 440,508

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Solution

The fourth proportional to 655,243.39, 904,514.88 and 440,508 is: 608,088.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,243.39 : 904,514.88 = 440,508 : x
  2. Step 2: Convert to fraction form
    655,243.39/904,514.88 = 440,508/x
  3. Step 3: Cross multiply
    655,243.39x = 904,514.88 × 440,508
  4. Step 4: Simplify right side
    655,243.39x = 398,446,040,759.04
  5. Step 5: Solve for x
    x = 398,446,040,759.04/655,243.39
  6. Step 6: Final answer
    x = 608,088.61

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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.