Home / 862,791.40-1,190,741.18-518,739.88

Finding the Fourth Proportional to 862,791.40, 1,190,741.18 and 518,739.88

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Solution

The fourth proportional to 862,791.40, 1,190,741.18 and 518,739.88 is: 715,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,791.40 : 1,190,741.18 = 518,739.88 : x
  2. Step 2: Convert to fraction form
    862,791.40/1,190,741.18 = 518,739.88/x
  3. Step 3: Cross multiply
    862,791.40x = 1,190,741.18 × 518,739.88
  4. Step 4: Simplify right side
    862,791.40x = 617,684,936,824.26
  5. Step 5: Solve for x
    x = 617,684,936,824.26/862,791.40
  6. Step 6: Final answer
    x = 715,914.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.