Home / 823,940.80-1,235,911.20-291,479.20

Finding the Fourth Proportional to 823,940.80, 1,235,911.20 and 291,479.20

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Solution

The fourth proportional to 823,940.80, 1,235,911.20 and 291,479.20 is: 437,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,940.80 : 1,235,911.20 = 291,479.20 : x
  2. Step 2: Convert to fraction form
    823,940.80/1,235,911.20 = 291,479.20/x
  3. Step 3: Cross multiply
    823,940.80x = 1,235,911.20 × 291,479.20
  4. Step 4: Simplify right side
    823,940.80x = 360,242,407,847.04
  5. Step 5: Solve for x
    x = 360,242,407,847.04/823,940.80
  6. Step 6: Final answer
    x = 437,218.80

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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.