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Finding the Fourth Proportional to 625,466.07, 863,147.44 and 338,990.94

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Solution

The fourth proportional to 625,466.07, 863,147.44 and 338,990.94 is: 467,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,466.07 : 863,147.44 = 338,990.94 : x
  2. Step 2: Convert to fraction form
    625,466.07/863,147.44 = 338,990.94/x
  3. Step 3: Cross multiply
    625,466.07x = 863,147.44 × 338,990.94
  4. Step 4: Simplify right side
    625,466.07x = 292,599,162,467.93
  5. Step 5: Solve for x
    x = 292,599,162,467.93/625,466.07
  6. Step 6: Final answer
    x = 467,809.81

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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.