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Finding the Fourth Proportional to 1,335,996.99, 2,003,978.48 and 325,120.64

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Solution

The fourth proportional to 1,335,996.99, 2,003,978.48 and 325,120.64 is: 487,676.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,996.99 : 2,003,978.48 = 325,120.64 : x
  2. Step 2: Convert to fraction form
    1,335,996.99/2,003,978.48 = 325,120.64/x
  3. Step 3: Cross multiply
    1,335,996.99x = 2,003,978.48 × 325,120.64
  4. Step 4: Simplify right side
    1,335,996.99x = 651,534,754,318.33
  5. Step 5: Solve for x
    x = 651,534,754,318.33/1,335,996.99
  6. Step 6: Final answer
    x = 487,676.81

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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.