Home / 644,744.20-965,273.10-395,912.20

Finding the Fourth Proportional to 644,744.20, 965,273.10 and 395,912.20

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Solution

The fourth proportional to 644,744.20, 965,273.10 and 395,912.20 is: 592,736.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,744.20 : 965,273.10 = 395,912.20 : x
  2. Step 2: Convert to fraction form
    644,744.20/965,273.10 = 395,912.20/x
  3. Step 3: Cross multiply
    644,744.20x = 965,273.10 × 395,912.20
  4. Step 4: Simplify right side
    644,744.20x = 382,163,396,621.82
  5. Step 5: Solve for x
    x = 382,163,396,621.82/644,744.20
  6. Step 6: Final answer
    x = 592,736.46

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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.