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Finding the Fourth Proportional to 631,512.62, 871,499.96 and 345,050.45

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Solution

The fourth proportional to 631,512.62, 871,499.96 and 345,050.45 is: 476,176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,512.62 : 871,499.96 = 345,050.45 : x
  2. Step 2: Convert to fraction form
    631,512.62/871,499.96 = 345,050.45/x
  3. Step 3: Cross multiply
    631,512.62x = 871,499.96 × 345,050.45
  4. Step 4: Simplify right side
    631,512.62x = 300,711,447,290.23
  5. Step 5: Solve for x
    x = 300,711,447,290.23/631,512.62
  6. Step 6: Final answer
    x = 476,176.47

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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.