Home / 785,447.69-1,084,556.99-640,276.25

Finding the Fourth Proportional to 785,447.69, 1,084,556.99 and 640,276.25

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Solution

The fourth proportional to 785,447.69, 1,084,556.99 and 640,276.25 is: 884,102.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,447.69 : 1,084,556.99 = 640,276.25 : x
  2. Step 2: Convert to fraction form
    785,447.69/1,084,556.99 = 640,276.25/x
  3. Step 3: Cross multiply
    785,447.69x = 1,084,556.99 × 640,276.25
  4. Step 4: Simplify right side
    785,447.69x = 694,416,078,646.39
  5. Step 5: Solve for x
    x = 694,416,078,646.39/785,447.69
  6. Step 6: Final answer
    x = 884,102.27

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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.