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Finding the Fourth Proportional to 455,542.40, 683,313.60 and 449,321.60

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Solution

The fourth proportional to 455,542.40, 683,313.60 and 449,321.60 is: 673,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,542.40 : 683,313.60 = 449,321.60 : x
  2. Step 2: Convert to fraction form
    455,542.40/683,313.60 = 449,321.60/x
  3. Step 3: Cross multiply
    455,542.40x = 683,313.60 × 449,321.60
  4. Step 4: Simplify right side
    455,542.40x = 307,027,560,053.76
  5. Step 5: Solve for x
    x = 307,027,560,053.76/455,542.40
  6. Step 6: Final answer
    x = 673,982.40

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1.5x scale

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.