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Finding the Fourth Proportional to 511,412.89, 765,984.37 and 330,917.96

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Solution

The fourth proportional to 511,412.89, 765,984.37 and 330,917.96 is: 495,642.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,412.89 : 765,984.37 = 330,917.96 : x
  2. Step 2: Convert to fraction form
    511,412.89/765,984.37 = 330,917.96/x
  3. Step 3: Cross multiply
    511,412.89x = 765,984.37 × 330,917.96
  4. Step 4: Simplify right side
    511,412.89x = 253,477,980,455.07
  5. Step 5: Solve for x
    x = 253,477,980,455.07/511,412.89
  6. Step 6: Final answer
    x = 495,642.54

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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.