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Finding the Fourth Proportional to 631,662.62, 871,735.86 and 356,088.47

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Solution

The fourth proportional to 631,662.62, 871,735.86 and 356,088.47 is: 491,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,662.62 : 871,735.86 = 356,088.47 : x
  2. Step 2: Convert to fraction form
    631,662.62/871,735.86 = 356,088.47/x
  3. Step 3: Cross multiply
    631,662.62x = 871,735.86 × 356,088.47
  4. Step 4: Simplify right side
    631,662.62x = 310,415,084,272.86
  5. Step 5: Solve for x
    x = 310,415,084,272.86/631,662.62
  6. Step 6: Final answer
    x = 491,425.45

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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.