Home / 306,380-648,088

Finding the Third Proportional to 306,380 and 648,088

Calculator

Solution

The third proportional to 306,380 and 648,088 is: 1,370,905.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,380 : 648,088 = 648,088 : x
  2. Step 2: Convert to fraction form
    306,380/648,088 = 648,088/x
  3. Step 3: Cross multiply
    306,380x = 648,088 × 648,088
  4. Step 4: Simplify right side
    306,380x = 420,018,055,744
  5. Step 5: Solve for x
    x = 420,018,055,744/306,380
  6. Step 6: Final answer
    x = 1,370,905.59

Related Problems

Find third proportional to 153,190 and 324,044
Half scale
Find third proportional to 612,760 and 1,296,176
Double scale
Find third proportional to 306,382 and 648,092
Similar ratio
Find third proportional to 459,570 and 972,132
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.