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Finding the Fourth Proportional to 485,534.70, 668,512.98 and 412,794.27

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Solution

The fourth proportional to 485,534.70, 668,512.98 and 412,794.27 is: 568,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,534.70 : 668,512.98 = 412,794.27 : x
  2. Step 2: Convert to fraction form
    485,534.70/668,512.98 = 412,794.27/x
  3. Step 3: Cross multiply
    485,534.70x = 668,512.98 × 412,794.27
  4. Step 4: Simplify right side
    485,534.70x = 275,958,327,564.63
  5. Step 5: Solve for x
    x = 275,958,327,564.63/485,534.70
  6. Step 6: Final answer
    x = 568,359.64

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1.5x scale

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.