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Finding the Fourth Proportional to 644,864.80, 967,297.20 and 445,799.20

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Solution

The fourth proportional to 644,864.80, 967,297.20 and 445,799.20 is: 668,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,864.80 : 967,297.20 = 445,799.20 : x
  2. Step 2: Convert to fraction form
    644,864.80/967,297.20 = 445,799.20/x
  3. Step 3: Cross multiply
    644,864.80x = 967,297.20 × 445,799.20
  4. Step 4: Simplify right side
    644,864.80x = 431,220,317,922.24
  5. Step 5: Solve for x
    x = 431,220,317,922.24/644,864.80
  6. Step 6: Final answer
    x = 668,698.80

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Similar ratio
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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.