Home / 780,128.77-1,170,233.25-219,207.01

Finding the Fourth Proportional to 780,128.77, 1,170,233.25 and 219,207.01

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Solution

The fourth proportional to 780,128.77, 1,170,233.25 and 219,207.01 is: 328,821.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,128.77 : 1,170,233.25 = 219,207.01 : x
  2. Step 2: Convert to fraction form
    780,128.77/1,170,233.25 = 219,207.01/x
  3. Step 3: Cross multiply
    780,128.77x = 1,170,233.25 × 219,207.01
  4. Step 4: Simplify right side
    780,128.77x = 256,523,331,735.08
  5. Step 5: Solve for x
    x = 256,523,331,735.08/780,128.77
  6. Step 6: Final answer
    x = 328,821.78

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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.