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Finding the Fourth Proportional to 1,203,933, 1,661,416.38 and 660,099

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Solution

The fourth proportional to 1,203,933, 1,661,416.38 and 660,099 is: 910,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,933 : 1,661,416.38 = 660,099 : x
  2. Step 2: Convert to fraction form
    1,203,933/1,661,416.38 = 660,099/x
  3. Step 3: Cross multiply
    1,203,933x = 1,661,416.38 × 660,099
  4. Step 4: Simplify right side
    1,203,933x = 1,096,699,291,021.62
  5. Step 5: Solve for x
    x = 1,096,699,291,021.62/1,203,933
  6. Step 6: Final answer
    x = 910,930.50

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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.