Home / 785,451.06-1,084,561.65-640,279.62

Finding the Fourth Proportional to 785,451.06, 1,084,561.65 and 640,279.62

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Solution

The fourth proportional to 785,451.06, 1,084,561.65 and 640,279.62 is: 884,106.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,451.06 : 1,084,561.65 = 640,279.62 : x
  2. Step 2: Convert to fraction form
    785,451.06/1,084,561.65 = 640,279.62/x
  3. Step 3: Cross multiply
    785,451.06x = 1,084,561.65 × 640,279.62
  4. Step 4: Simplify right side
    785,451.06x = 694,422,721,128.57
  5. Step 5: Solve for x
    x = 694,422,721,128.57/785,451.06
  6. Step 6: Final answer
    x = 884,106.92

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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.