Home / 780,305.69-1,170,458.51-219,340.19

Finding the Fourth Proportional to 780,305.69, 1,170,458.51 and 219,340.19

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Solution

The fourth proportional to 780,305.69, 1,170,458.51 and 219,340.19 is: 329,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,305.69 : 1,170,458.51 = 219,340.19 : x
  2. Step 2: Convert to fraction form
    780,305.69/1,170,458.51 = 219,340.19/x
  3. Step 3: Cross multiply
    780,305.69x = 1,170,458.51 × 219,340.19
  4. Step 4: Simplify right side
    780,305.69x = 256,728,585,021.52
  5. Step 5: Solve for x
    x = 256,728,585,021.52/780,305.69
  6. Step 6: Final answer
    x = 329,010.27

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Similar ratio
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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.