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Finding the Fourth Proportional to 631,858, 947,787 and 188,626

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Solution

The fourth proportional to 631,858, 947,787 and 188,626 is: 282,939

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,858 : 947,787 = 188,626 : x
  2. Step 2: Convert to fraction form
    631,858/947,787 = 188,626/x
  3. Step 3: Cross multiply
    631,858x = 947,787 × 188,626
  4. Step 4: Simplify right side
    631,858x = 178,777,270,662
  5. Step 5: Solve for x
    x = 178,777,270,662/631,858
  6. Step 6: Final answer
    x = 282,939

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.