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Finding the Fourth Proportional to 631,508.49, 871,494.26 and 345,046.35

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Solution

The fourth proportional to 631,508.49, 871,494.26 and 345,046.35 is: 476,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,508.49 : 871,494.26 = 345,046.35 : x
  2. Step 2: Convert to fraction form
    631,508.49/871,494.26 = 345,046.35/x
  3. Step 3: Cross multiply
    631,508.49x = 871,494.26 × 345,046.35
  4. Step 4: Simplify right side
    631,508.49x = 300,705,911,733.72
  5. Step 5: Solve for x
    x = 300,705,911,733.72/631,508.49
  6. Step 6: Final answer
    x = 476,170.81

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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.