Home / 685,637.64-945,865.92-443,998.05

Finding the Fourth Proportional to 685,637.64, 945,865.92 and 443,998.05

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Solution

The fourth proportional to 685,637.64, 945,865.92 and 443,998.05 is: 612,513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,637.64 : 945,865.92 = 443,998.05 : x
  2. Step 2: Convert to fraction form
    685,637.64/945,865.92 = 443,998.05/x
  3. Step 3: Cross multiply
    685,637.64x = 945,865.92 × 443,998.05
  4. Step 4: Simplify right side
    685,637.64x = 419,962,624,041.46
  5. Step 5: Solve for x
    x = 419,962,624,041.46/685,637.64
  6. Step 6: Final answer
    x = 612,513.96

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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.