Home / 891,131.80-1,336,697.70-828,146.20

Finding the Fourth Proportional to 891,131.80, 1,336,697.70 and 828,146.20

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Solution

The fourth proportional to 891,131.80, 1,336,697.70 and 828,146.20 is: 1,242,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,131.80 : 1,336,697.70 = 828,146.20 : x
  2. Step 2: Convert to fraction form
    891,131.80/1,336,697.70 = 828,146.20/x
  3. Step 3: Cross multiply
    891,131.80x = 1,336,697.70 × 828,146.20
  4. Step 4: Simplify right side
    891,131.80x = 1,106,981,120,803.74
  5. Step 5: Solve for x
    x = 1,106,981,120,803.74/891,131.80
  6. Step 6: Final answer
    x = 1,242,219.30

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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.