Finding the Third Proportional to 287,289,220 and 445,754,400
Calculator
Solution
The third proportional to 287,289,220 and 445,754,400 is: 691,627,013.08
Step by Step Solution
- Step 1: Write the proportion equation
287,289,220 : 445,754,400 = 445,754,400 : x - Step 2: Convert to fraction form
287,289,220/445,754,400 = 445,754,400/x - Step 3: Cross multiply
287,289,220x = 445,754,400 × 445,754,400 - Step 4: Simplify right side
287,289,220x = 198,696,985,119,360,000 - Step 5: Solve for x
x = 198,696,985,119,360,000/287,289,220 - Step 6: Final answer
x = 691,627,013.08
Related Problems
Find third proportional to 143,644,610 and 222,877,200
Half scale
Find third proportional to 574,578,440 and 891,508,800
Double scale
Find third proportional to 287,289,222 and 445,754,403
Similar ratio
Find third proportional to 430,933,830 and 668,631,600
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.