Finding the Third Proportional to 640,714 and 1,409,328
Calculator
Solution
The third proportional to 640,714 and 1,409,328 is: 3,099,987.53
Step by Step Solution
- Step 1: Write the proportion equation
640,714 : 1,409,328 = 1,409,328 : x - Step 2: Convert to fraction form
640,714/1,409,328 = 1,409,328/x - Step 3: Cross multiply
640,714x = 1,409,328 × 1,409,328 - Step 4: Simplify right side
640,714x = 1,986,205,411,584 - Step 5: Solve for x
x = 1,986,205,411,584/640,714 - Step 6: Final answer
x = 3,099,987.53
Related Problems
Find third proportional to 320,357 and 704,664
Half scale
Find third proportional to 1,281,428 and 2,818,656
Double scale
Find third proportional to 640,716 and 1,409,332
Similar ratio
Find third proportional to 961,071 and 2,113,992
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.