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Finding the Fourth Proportional to 673,728.40, 1,010,738.40 and 200,461.60

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Solution

The fourth proportional to 673,728.40, 1,010,738.40 and 200,461.60 is: 300,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,728.40 : 1,010,738.40 = 200,461.60 : x
  2. Step 2: Convert to fraction form
    673,728.40/1,010,738.40 = 200,461.60/x
  3. Step 3: Cross multiply
    673,728.40x = 1,010,738.40 × 200,461.60
  4. Step 4: Simplify right side
    673,728.40x = 202,614,236,845.44
  5. Step 5: Solve for x
    x = 202,614,236,845.44/673,728.40
  6. Step 6: Final answer
    x = 300,735.78

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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.