Home / 787,383.18-1,086,576.51-443,218.36

Finding the Fourth Proportional to 787,383.18, 1,086,576.51 and 443,218.36

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Solution

The fourth proportional to 787,383.18, 1,086,576.51 and 443,218.36 is: 611,634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,383.18 : 1,086,576.51 = 443,218.36 : x
  2. Step 2: Convert to fraction form
    787,383.18/1,086,576.51 = 443,218.36/x
  3. Step 3: Cross multiply
    787,383.18x = 1,086,576.51 × 443,218.36
  4. Step 4: Simplify right side
    787,383.18x = 481,590,658,776.72
  5. Step 5: Solve for x
    x = 481,590,658,776.72/787,383.18
  6. Step 6: Final answer
    x = 611,634.43

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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.