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Finding the Fourth Proportional to 635,579, 877,112.80 and 349,114.80

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Solution

The fourth proportional to 635,579, 877,112.80 and 349,114.80 is: 481,785.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,579 : 877,112.80 = 349,114.80 : x
  2. Step 2: Convert to fraction form
    635,579/877,112.80 = 349,114.80/x
  3. Step 3: Cross multiply
    635,579x = 877,112.80 × 349,114.80
  4. Step 4: Simplify right side
    635,579x = 306,213,059,749.44
  5. Step 5: Solve for x
    x = 306,213,059,749.44/635,579
  6. Step 6: Final answer
    x = 481,785.99

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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.