Finding the Fourth Proportional to 778,415,612.81, 1,074,212,851.67 and 439,395,448
Calculator
Solution
The fourth proportional to 778,415,612.81, 1,074,212,851.67 and 439,395,448 is: 606,365,326.49
Step by Step Solution
- Step 1: Write the proportion equation
778,415,612.81 : 1,074,212,851.67 = 439,395,448 : x - Step 2: Convert to fraction form
778,415,612.81/1,074,212,851.67 = 439,395,448/x - Step 3: Cross multiply
778,415,612.81x = 1,074,212,851.67 × 439,395,448 - Step 4: Simplify right side
778,415,612.81x = 472,004,237,206,897,216 - Step 5: Solve for x
x = 472,004,237,206,897,216/778,415,612.81 - Step 6: Final answer
x = 606,365,326.49
Related Problems
Find fourth proportional to 389,207,806.41, 537,106,425.84 and 219,697,724
Half scale
Find fourth proportional to 1,556,831,225.62, 2,148,425,703.34 and 878,790,896
Double scale
Find fourth proportional to 778,415,613.81, 1,074,212,853.05 and 439,395,449
Similar ratio
Find fourth proportional to 1,167,623,419.22, 1,611,319,277.51 and 659,093,172
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.