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Finding the Fourth Proportional to 631,522.88, 871,491.39 and 345,036.81

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Solution

The fourth proportional to 631,522.88, 871,491.39 and 345,036.81 is: 476,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,522.88 : 871,491.39 = 345,036.81 : x
  2. Step 2: Convert to fraction form
    631,522.88/871,491.39 = 345,036.81/x
  3. Step 3: Cross multiply
    631,522.88x = 871,491.39 × 345,036.81
  4. Step 4: Simplify right side
    631,522.88x = 300,696,611,122.27
  5. Step 5: Solve for x
    x = 300,696,611,122.27/631,522.88
  6. Step 6: Final answer
    x = 476,145.24

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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.