Home / 1,242,200.76-1,863,197.16-343,653.72

Finding the Fourth Proportional to 1,242,200.76, 1,863,197.16 and 343,653.72

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Solution

The fourth proportional to 1,242,200.76, 1,863,197.16 and 343,653.72 is: 515,451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,200.76 : 1,863,197.16 = 343,653.72 : x
  2. Step 2: Convert to fraction form
    1,242,200.76/1,863,197.16 = 343,653.72/x
  3. Step 3: Cross multiply
    1,242,200.76x = 1,863,197.16 × 343,653.72
  4. Step 4: Simplify right side
    1,242,200.76x = 640,294,635,127.44
  5. Step 5: Solve for x
    x = 640,294,635,127.44/1,242,200.76
  6. Step 6: Final answer
    x = 515,451.81

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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.