Home / 862,140.95-1,293,211.44-263,105.18

Finding the Fourth Proportional to 862,140.95, 1,293,211.44 and 263,105.18

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Solution

The fourth proportional to 862,140.95, 1,293,211.44 and 263,105.18 is: 394,657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,140.95 : 1,293,211.44 = 263,105.18 : x
  2. Step 2: Convert to fraction form
    862,140.95/1,293,211.44 = 263,105.18/x
  3. Step 3: Cross multiply
    862,140.95x = 1,293,211.44 × 263,105.18
  4. Step 4: Simplify right side
    862,140.95x = 340,250,628,699.26
  5. Step 5: Solve for x
    x = 340,250,628,699.26/862,140.95
  6. Step 6: Final answer
    x = 394,657.77

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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.