Home / 1,222,121.60-1,686,546-678,292.44

Finding the Fourth Proportional to 1,222,121.60, 1,686,546 and 678,292.44

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Solution

The fourth proportional to 1,222,121.60, 1,686,546 and 678,292.44 is: 936,053.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,121.60 : 1,686,546 = 678,292.44 : x
  2. Step 2: Convert to fraction form
    1,222,121.60/1,686,546 = 678,292.44/x
  3. Step 3: Cross multiply
    1,222,121.60x = 1,686,546 × 678,292.44
  4. Step 4: Simplify right side
    1,222,121.60x = 1,143,971,401,512.24
  5. Step 5: Solve for x
    x = 1,143,971,401,512.24/1,222,121.60
  6. Step 6: Final answer
    x = 936,053.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.