Home / 1,188,733.26-1,640,021.40-781,054.59

Finding the Fourth Proportional to 1,188,733.26, 1,640,021.40 and 781,054.59

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Solution

The fourth proportional to 1,188,733.26, 1,640,021.40 and 781,054.59 is: 1,077,572.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,733.26 : 1,640,021.40 = 781,054.59 : x
  2. Step 2: Convert to fraction form
    1,188,733.26/1,640,021.40 = 781,054.59/x
  3. Step 3: Cross multiply
    1,188,733.26x = 1,640,021.40 × 781,054.59
  4. Step 4: Simplify right side
    1,188,733.26x = 1,280,946,242,168.23
  5. Step 5: Solve for x
    x = 1,280,946,242,168.23/1,188,733.26
  6. Step 6: Final answer
    x = 1,077,572.48

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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.