Home / 836,109.60-1,254,164.40-780,122.40

Finding the Fourth Proportional to 836,109.60, 1,254,164.40 and 780,122.40

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Solution

The fourth proportional to 836,109.60, 1,254,164.40 and 780,122.40 is: 1,170,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,109.60 : 1,254,164.40 = 780,122.40 : x
  2. Step 2: Convert to fraction form
    836,109.60/1,254,164.40 = 780,122.40/x
  3. Step 3: Cross multiply
    836,109.60x = 1,254,164.40 × 780,122.40
  4. Step 4: Simplify right side
    836,109.60x = 978,401,741,722.56
  5. Step 5: Solve for x
    x = 978,401,741,722.56/836,109.60
  6. Step 6: Final answer
    x = 1,170,183.60

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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.