Home / 680,799.12-1,019,980.44-380,930.64

Finding the Fourth Proportional to 680,799.12, 1,019,980.44 and 380,930.64

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Solution

The fourth proportional to 680,799.12, 1,019,980.44 and 380,930.64 is: 570,714.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,799.12 : 1,019,980.44 = 380,930.64 : x
  2. Step 2: Convert to fraction form
    680,799.12/1,019,980.44 = 380,930.64/x
  3. Step 3: Cross multiply
    680,799.12x = 1,019,980.44 × 380,930.64
  4. Step 4: Simplify right side
    680,799.12x = 388,541,801,796.68
  5. Step 5: Solve for x
    x = 388,541,801,796.68/680,799.12
  6. Step 6: Final answer
    x = 570,714.31

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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.