Home / 1,285,644.80-1,928,467.20-399,180.80

Finding the Fourth Proportional to 1,285,644.80, 1,928,467.20 and 399,180.80

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Solution

The fourth proportional to 1,285,644.80, 1,928,467.20 and 399,180.80 is: 598,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,644.80 : 1,928,467.20 = 399,180.80 : x
  2. Step 2: Convert to fraction form
    1,285,644.80/1,928,467.20 = 399,180.80/x
  3. Step 3: Cross multiply
    1,285,644.80x = 1,928,467.20 × 399,180.80
  4. Step 4: Simplify right side
    1,285,644.80x = 769,807,079,669.76
  5. Step 5: Solve for x
    x = 769,807,079,669.76/1,285,644.80
  6. Step 6: Final answer
    x = 598,771.20

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Double scale
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Similar ratio
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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.