Home / 724,921.44-1,086,783.48-319,824.96

Finding the Fourth Proportional to 724,921.44, 1,086,783.48 and 319,824.96

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Solution

The fourth proportional to 724,921.44, 1,086,783.48 and 319,824.96 is: 479,473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,921.44 : 1,086,783.48 = 319,824.96 : x
  2. Step 2: Convert to fraction form
    724,921.44/1,086,783.48 = 319,824.96/x
  3. Step 3: Cross multiply
    724,921.44x = 1,086,783.48 × 319,824.96
  4. Step 4: Simplify right side
    724,921.44x = 347,580,483,019.66
  5. Step 5: Solve for x
    x = 347,580,483,019.66/724,921.44
  6. Step 6: Final answer
    x = 479,473.31

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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.