Finding the Third Proportional to 319,985.75 and 685,513.75
Calculator
Solution
The third proportional to 319,985.75 and 685,513.75 is: 1,468,593.84
Step by Step Solution
- Step 1: Write the proportion equation
319,985.75 : 685,513.75 = 685,513.75 : x - Step 2: Convert to fraction form
319,985.75/685,513.75 = 685,513.75/x - Step 3: Cross multiply
319,985.75x = 685,513.75 × 685,513.75 - Step 4: Simplify right side
319,985.75x = 469,929,101,439.06 - Step 5: Solve for x
x = 469,929,101,439.06/319,985.75 - Step 6: Final answer
x = 1,468,593.84
Related Problems
Find third proportional to 159,992.88 and 342,756.88
Half scale
Find third proportional to 639,971.50 and 1,371,027.50
Double scale
Find third proportional to 319,988 and 685,518
Similar ratio
Find third proportional to 479,978.63 and 1,028,270.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.