Home / 809,114.70-1,213,672.05-557,172.30

Finding the Fourth Proportional to 809,114.70, 1,213,672.05 and 557,172.30

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Solution

The fourth proportional to 809,114.70, 1,213,672.05 and 557,172.30 is: 835,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,114.70 : 1,213,672.05 = 557,172.30 : x
  2. Step 2: Convert to fraction form
    809,114.70/1,213,672.05 = 557,172.30/x
  3. Step 3: Cross multiply
    809,114.70x = 1,213,672.05 × 557,172.30
  4. Step 4: Simplify right side
    809,114.70x = 676,224,447,544.22
  5. Step 5: Solve for x
    x = 676,224,447,544.22/809,114.70
  6. Step 6: Final answer
    x = 835,758.45

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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.