Home / 685,222,017.33-1,027,711,528.07-311,642,399.68

Finding the Fourth Proportional to 685,222,017.33, 1,027,711,528.07 and 311,642,399.68

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Solution

The fourth proportional to 685,222,017.33, 1,027,711,528.07 and 311,642,399.68 is: 467,408,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,222,017.33 : 1,027,711,528.07 = 311,642,399.68 : x
  2. Step 2: Convert to fraction form
    685,222,017.33/1,027,711,528.07 = 311,642,399.68/x
  3. Step 3: Cross multiply
    685,222,017.33x = 1,027,711,528.07 × 311,642,399.68
  4. Step 4: Simplify right side
    685,222,017.33x = 320,278,486,782,407,040
  5. Step 5: Solve for x
    x = 320,278,486,782,407,040/685,222,017.33
  6. Step 6: Final answer
    x = 467,408,341.65

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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.