Home / 685,748.27-1,028,625.82-281,161.47

Finding the Fourth Proportional to 685,748.27, 1,028,625.82 and 281,161.47

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Solution

The fourth proportional to 685,748.27, 1,028,625.82 and 281,161.47 is: 421,743.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,748.27 : 1,028,625.82 = 281,161.47 : x
  2. Step 2: Convert to fraction form
    685,748.27/1,028,625.82 = 281,161.47/x
  3. Step 3: Cross multiply
    685,748.27x = 1,028,625.82 × 281,161.47
  4. Step 4: Simplify right side
    685,748.27x = 289,209,946,928.25
  5. Step 5: Solve for x
    x = 289,209,946,928.25/685,748.27
  6. Step 6: Final answer
    x = 421,743.60

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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.