Home / 809,208.60-1,213,812.90-557,266.20

Finding the Fourth Proportional to 809,208.60, 1,213,812.90 and 557,266.20

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Solution

The fourth proportional to 809,208.60, 1,213,812.90 and 557,266.20 is: 835,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,208.60 : 1,213,812.90 = 557,266.20 : x
  2. Step 2: Convert to fraction form
    809,208.60/1,213,812.90 = 557,266.20/x
  3. Step 3: Cross multiply
    809,208.60x = 1,213,812.90 × 557,266.20
  4. Step 4: Simplify right side
    809,208.60x = 676,416,902,293.98
  5. Step 5: Solve for x
    x = 676,416,902,293.98/809,208.60
  6. Step 6: Final answer
    x = 835,899.30

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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.