(1:6000000):8=(1:8000000):xx=8*(1:8000000)/(1:6000000)=6厘米
8除以1/6000000=48000000cm48000000乘以1/800000=6cm
解设:xcm.1:6000000=8:x x=48000000解设:xcm.1:8000000=x:48000000 8000000=48000000 x=6答,6厘米。