Home / 809,368.20-1,214,052.30-276,809.40

Finding the Fourth Proportional to 809,368.20, 1,214,052.30 and 276,809.40

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Solution

The fourth proportional to 809,368.20, 1,214,052.30 and 276,809.40 is: 415,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,368.20 : 1,214,052.30 = 276,809.40 : x
  2. Step 2: Convert to fraction form
    809,368.20/1,214,052.30 = 276,809.40/x
  3. Step 3: Cross multiply
    809,368.20x = 1,214,052.30 × 276,809.40
  4. Step 4: Simplify right side
    809,368.20x = 336,061,088,731.62
  5. Step 5: Solve for x
    x = 336,061,088,731.62/809,368.20
  6. Step 6: Final answer
    x = 415,214.10

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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.