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Finding the Fourth Proportional to 631,624.73, 871,644.39 and 345,144.81

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Solution

The fourth proportional to 631,624.73, 871,644.39 and 345,144.81 is: 476,301.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,624.73 : 871,644.39 = 345,144.81 : x
  2. Step 2: Convert to fraction form
    631,624.73/871,644.39 = 345,144.81/x
  3. Step 3: Cross multiply
    631,624.73x = 871,644.39 × 345,144.81
  4. Step 4: Simplify right side
    631,624.73x = 300,843,537,374.12
  5. Step 5: Solve for x
    x = 300,843,537,374.12/631,624.73
  6. Step 6: Final answer
    x = 476,301.08

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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.