Home / 780,689.76-1,170,131.04-359,080.80

Finding the Fourth Proportional to 780,689.76, 1,170,131.04 and 359,080.80

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Solution

The fourth proportional to 780,689.76, 1,170,131.04 and 359,080.80 is: 538,205.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,689.76 : 1,170,131.04 = 359,080.80 : x
  2. Step 2: Convert to fraction form
    780,689.76/1,170,131.04 = 359,080.80/x
  3. Step 3: Cross multiply
    780,689.76x = 1,170,131.04 × 359,080.80
  4. Step 4: Simplify right side
    780,689.76x = 420,171,589,948.03
  5. Step 5: Solve for x
    x = 420,171,589,948.03/780,689.76
  6. Step 6: Final answer
    x = 538,205.59

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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.