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Finding the Fourth Proportional to 631,552.60, 871,548.71 and 345,072.66

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Solution

The fourth proportional to 631,552.60, 871,548.71 and 345,072.66 is: 476,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,552.60 : 871,548.71 = 345,072.66 : x
  2. Step 2: Convert to fraction form
    631,552.60/871,548.71 = 345,072.66/x
  3. Step 3: Cross multiply
    631,552.60x = 871,548.71 × 345,072.66
  4. Step 4: Simplify right side
    631,552.60x = 300,747,628,626.63
  5. Step 5: Solve for x
    x = 300,747,628,626.63/631,552.60
  6. Step 6: Final answer
    x = 476,203.61

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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.