Home / 792,145.80-1,188,801.90-319,170.60

Finding the Fourth Proportional to 792,145.80, 1,188,801.90 and 319,170.60

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Solution

The fourth proportional to 792,145.80, 1,188,801.90 and 319,170.60 is: 478,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,145.80 : 1,188,801.90 = 319,170.60 : x
  2. Step 2: Convert to fraction form
    792,145.80/1,188,801.90 = 319,170.60/x
  3. Step 3: Cross multiply
    792,145.80x = 1,188,801.90 × 319,170.60
  4. Step 4: Simplify right side
    792,145.80x = 379,430,615,704.14
  5. Step 5: Solve for x
    x = 379,430,615,704.14/792,145.80
  6. Step 6: Final answer
    x = 478,990.88

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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.