Home / 819,573.39-1,228,518.09-313,997.31

Finding the Fourth Proportional to 819,573.39, 1,228,518.09 and 313,997.31

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Solution

The fourth proportional to 819,573.39, 1,228,518.09 and 313,997.31 is: 470,673.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,573.39 : 1,228,518.09 = 313,997.31 : x
  2. Step 2: Convert to fraction form
    819,573.39/1,228,518.09 = 313,997.31/x
  3. Step 3: Cross multiply
    819,573.39x = 1,228,518.09 × 313,997.31
  4. Step 4: Simplify right side
    819,573.39x = 385,751,375,546.34
  5. Step 5: Solve for x
    x = 385,751,375,546.34/819,573.39
  6. Step 6: Final answer
    x = 470,673.38

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1.5x scale

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.