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Finding the Fourth Proportional to 635,385.64, 876,847.46 and 345,009.56

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Solution

The fourth proportional to 635,385.64, 876,847.46 and 345,009.56 is: 476,121.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,385.64 : 876,847.46 = 345,009.56 : x
  2. Step 2: Convert to fraction form
    635,385.64/876,847.46 = 345,009.56/x
  3. Step 3: Cross multiply
    635,385.64x = 876,847.46 × 345,009.56
  4. Step 4: Simplify right side
    635,385.64x = 302,520,756,361.72
  5. Step 5: Solve for x
    x = 302,520,756,361.72/635,385.64
  6. Step 6: Final answer
    x = 476,121.49

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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.