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Finding the Fourth Proportional to 635,679.12, 877,244.43 and 345,293.36

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Solution

The fourth proportional to 635,679.12, 877,244.43 and 345,293.36 is: 476,508.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,679.12 : 877,244.43 = 345,293.36 : x
  2. Step 2: Convert to fraction form
    635,679.12/877,244.43 = 345,293.36/x
  3. Step 3: Cross multiply
    635,679.12x = 877,244.43 × 345,293.36
  4. Step 4: Simplify right side
    635,679.12x = 302,906,672,564.75
  5. Step 5: Solve for x
    x = 302,906,672,564.75/635,679.12
  6. Step 6: Final answer
    x = 476,508.77

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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.