Home / 823,909.80-1,235,864.70-291,448.20

Finding the Fourth Proportional to 823,909.80, 1,235,864.70 and 291,448.20

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Solution

The fourth proportional to 823,909.80, 1,235,864.70 and 291,448.20 is: 437,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,909.80 : 1,235,864.70 = 291,448.20 : x
  2. Step 2: Convert to fraction form
    823,909.80/1,235,864.70 = 291,448.20/x
  3. Step 3: Cross multiply
    823,909.80x = 1,235,864.70 × 291,448.20
  4. Step 4: Simplify right side
    823,909.80x = 360,190,542,258.54
  5. Step 5: Solve for x
    x = 360,190,542,258.54/823,909.80
  6. Step 6: Final answer
    x = 437,172.30

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Double scale
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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.