Home / 785,450.70-1,084,561.14-640,279.26

Finding the Fourth Proportional to 785,450.70, 1,084,561.14 and 640,279.26

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Solution

The fourth proportional to 785,450.70, 1,084,561.14 and 640,279.26 is: 884,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,450.70 : 1,084,561.14 = 640,279.26 : x
  2. Step 2: Convert to fraction form
    785,450.70/1,084,561.14 = 640,279.26/x
  3. Step 3: Cross multiply
    785,450.70x = 1,084,561.14 × 640,279.26
  4. Step 4: Simplify right side
    785,450.70x = 694,422,004,143.96
  5. Step 5: Solve for x
    x = 694,422,004,143.96/785,450.70
  6. Step 6: Final answer
    x = 884,106.42

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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.