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Finding the Fourth Proportional to 620,676.44, 856,534.50 and 352,404.44

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Solution

The fourth proportional to 620,676.44, 856,534.50 and 352,404.44 is: 486,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,676.44 : 856,534.50 = 352,404.44 : x
  2. Step 2: Convert to fraction form
    620,676.44/856,534.50 = 352,404.44/x
  3. Step 3: Cross multiply
    620,676.44x = 856,534.50 × 352,404.44
  4. Step 4: Simplify right side
    620,676.44x = 301,846,560,813.18
  5. Step 5: Solve for x
    x = 301,846,560,813.18/620,676.44
  6. Step 6: Final answer
    x = 486,318.70

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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.