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Finding the Fourth Proportional to 538,318.70, 808,680.90 and 449,745.20

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Solution

The fourth proportional to 538,318.70, 808,680.90 and 449,745.20 is: 675,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,318.70 : 808,680.90 = 449,745.20 : x
  2. Step 2: Convert to fraction form
    538,318.70/808,680.90 = 449,745.20/x
  3. Step 3: Cross multiply
    538,318.70x = 808,680.90 × 449,745.20
  4. Step 4: Simplify right side
    538,318.70x = 363,700,353,106.68
  5. Step 5: Solve for x
    x = 363,700,353,106.68/538,318.70
  6. Step 6: Final answer
    x = 675,622.74

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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.