Home / 431,186.20-646,873.98-127,556.60

Finding the Fourth Proportional to 431,186.20, 646,873.98 and 127,556.60

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Solution

The fourth proportional to 431,186.20, 646,873.98 and 127,556.60 is: 191,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,186.20 : 646,873.98 = 127,556.60 : x
  2. Step 2: Convert to fraction form
    431,186.20/646,873.98 = 127,556.60/x
  3. Step 3: Cross multiply
    431,186.20x = 646,873.98 × 127,556.60
  4. Step 4: Simplify right side
    431,186.20x = 82,513,045,517.27
  5. Step 5: Solve for x
    x = 82,513,045,517.27/431,186.20
  6. Step 6: Final answer
    x = 191,362.91

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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.