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Finding the Fourth Proportional to 641,308.89, 884,992.61 and 350,919.26

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Solution

The fourth proportional to 641,308.89, 884,992.61 and 350,919.26 is: 484,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,308.89 : 884,992.61 = 350,919.26 : x
  2. Step 2: Convert to fraction form
    641,308.89/884,992.61 = 350,919.26/x
  3. Step 3: Cross multiply
    641,308.89x = 884,992.61 × 350,919.26
  4. Step 4: Simplify right side
    641,308.89x = 310,560,945,627.11
  5. Step 5: Solve for x
    x = 310,560,945,627.11/641,308.89
  6. Step 6: Final answer
    x = 484,261.10

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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.