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Finding the Fourth Proportional to 631,812.36, 871,924.50 and 345,351.72

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Solution

The fourth proportional to 631,812.36, 871,924.50 and 345,351.72 is: 476,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,812.36 : 871,924.50 = 345,351.72 : x
  2. Step 2: Convert to fraction form
    631,812.36/871,924.50 = 345,351.72/x
  3. Step 3: Cross multiply
    631,812.36x = 871,924.50 × 345,351.72
  4. Step 4: Simplify right side
    631,812.36x = 301,120,625,785.14
  5. Step 5: Solve for x
    x = 301,120,625,785.14/631,812.36
  6. Step 6: Final answer
    x = 476,598.19

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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.