Home / 780,680.07-1,171,020.51-219,714.57

Finding the Fourth Proportional to 780,680.07, 1,171,020.51 and 219,714.57

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Solution

The fourth proportional to 780,680.07, 1,171,020.51 and 219,714.57 is: 329,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,680.07 : 1,171,020.51 = 219,714.57 : x
  2. Step 2: Convert to fraction form
    780,680.07/1,171,020.51 = 219,714.57/x
  3. Step 3: Cross multiply
    780,680.07x = 1,171,020.51 × 219,714.57
  4. Step 4: Simplify right side
    780,680.07x = 257,290,267,815.83
  5. Step 5: Solve for x
    x = 257,290,267,815.83/780,680.07
  6. Step 6: Final answer
    x = 329,571.97

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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.