Home / 1,208,951.20-1,668,286.68-664,999.20

Finding the Fourth Proportional to 1,208,951.20, 1,668,286.68 and 664,999.20

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Solution

The fourth proportional to 1,208,951.20, 1,668,286.68 and 664,999.20 is: 917,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,951.20 : 1,668,286.68 = 664,999.20 : x
  2. Step 2: Convert to fraction form
    1,208,951.20/1,668,286.68 = 664,999.20/x
  3. Step 3: Cross multiply
    1,208,951.20x = 1,668,286.68 × 664,999.20
  4. Step 4: Simplify right side
    1,208,951.20x = 1,109,409,307,570.66
  5. Step 5: Solve for x
    x = 1,109,409,307,570.66/1,208,951.20
  6. Step 6: Final answer
    x = 917,662.61

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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.