Home / 830,189.76-1,245,788.64-331,512

Finding the Fourth Proportional to 830,189.76, 1,245,788.64 and 331,512

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Solution

The fourth proportional to 830,189.76, 1,245,788.64 and 331,512 is: 497,469.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,189.76 : 1,245,788.64 = 331,512 : x
  2. Step 2: Convert to fraction form
    830,189.76/1,245,788.64 = 331,512/x
  3. Step 3: Cross multiply
    830,189.76x = 1,245,788.64 × 331,512
  4. Step 4: Simplify right side
    830,189.76x = 412,993,883,623.68
  5. Step 5: Solve for x
    x = 412,993,883,623.68/830,189.76
  6. Step 6: Final answer
    x = 497,469.26

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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.