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Finding the Fourth Proportional to 451,008.03, 621,892.34 and 287,405.37

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Solution

The fourth proportional to 451,008.03, 621,892.34 and 287,405.37 is: 396,301.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,008.03 : 621,892.34 = 287,405.37 : x
  2. Step 2: Convert to fraction form
    451,008.03/621,892.34 = 287,405.37/x
  3. Step 3: Cross multiply
    451,008.03x = 621,892.34 × 287,405.37
  4. Step 4: Simplify right side
    451,008.03x = 178,735,195,086.11
  5. Step 5: Solve for x
    x = 178,735,195,086.11/451,008.03
  6. Step 6: Final answer
    x = 396,301.58

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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.