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Finding the Fourth Proportional to 449,745.11, 620,588.28 and 288,818.14

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Solution

The fourth proportional to 449,745.11, 620,588.28 and 288,818.14 is: 398,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,745.11 : 620,588.28 = 288,818.14 : x
  2. Step 2: Convert to fraction form
    449,745.11/620,588.28 = 288,818.14/x
  3. Step 3: Cross multiply
    449,745.11x = 620,588.28 × 288,818.14
  4. Step 4: Simplify right side
    449,745.11x = 179,237,149,632.46
  5. Step 5: Solve for x
    x = 179,237,149,632.46/449,745.11
  6. Step 6: Final answer
    x = 398,530.52

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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.