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Finding the Fourth Proportional to 668,998.66, 923,218.60 and 363,074.98

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Solution

The fourth proportional to 668,998.66, 923,218.60 and 363,074.98 is: 501,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,998.66 : 923,218.60 = 363,074.98 : x
  2. Step 2: Convert to fraction form
    668,998.66/923,218.60 = 363,074.98/x
  3. Step 3: Cross multiply
    668,998.66x = 923,218.60 × 363,074.98
  4. Step 4: Simplify right side
    668,998.66x = 335,197,570,114.54
  5. Step 5: Solve for x
    x = 335,197,570,114.54/668,998.66
  6. Step 6: Final answer
    x = 501,043.71

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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.