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Finding the Fourth Proportional to 635,469.81, 876,947.31 and 348,989.89

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Solution

The fourth proportional to 635,469.81, 876,947.31 and 348,989.89 is: 481,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,469.81 : 876,947.31 = 348,989.89 : x
  2. Step 2: Convert to fraction form
    635,469.81/876,947.31 = 348,989.89/x
  3. Step 3: Cross multiply
    635,469.81x = 876,947.31 × 348,989.89
  4. Step 4: Simplify right side
    635,469.81x = 306,045,745,252.70
  5. Step 5: Solve for x
    x = 306,045,745,252.70/635,469.81
  6. Step 6: Final answer
    x = 481,605.48

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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.