Home / 591,900.72-816,821.92-319,968.78

Finding the Fourth Proportional to 591,900.72, 816,821.92 and 319,968.78

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Solution

The fourth proportional to 591,900.72, 816,821.92 and 319,968.78 is: 441,556.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,900.72 : 816,821.92 = 319,968.78 : x
  2. Step 2: Convert to fraction form
    591,900.72/816,821.92 = 319,968.78/x
  3. Step 3: Cross multiply
    591,900.72x = 816,821.92 × 319,968.78
  4. Step 4: Simplify right side
    591,900.72x = 261,357,507,535.70
  5. Step 5: Solve for x
    x = 261,357,507,535.70/591,900.72
  6. Step 6: Final answer
    x = 441,556.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.