Finding the Fourth Proportional to 684,721,642.40, 944,836,149.76 and 383,323,458.08
Calculator
Solution
The fourth proportional to 684,721,642.40, 944,836,149.76 and 383,323,458.08 is: 528,941,744.82
Step by Step Solution
- Step 1: Write the proportion equation
684,721,642.40 : 944,836,149.76 = 383,323,458.08 : x - Step 2: Convert to fraction form
684,721,642.40/944,836,149.76 = 383,323,458.08/x - Step 3: Cross multiply
684,721,642.40x = 944,836,149.76 × 383,323,458.08 - Step 4: Simplify right side
684,721,642.40x = 362,177,860,244,995,968 - Step 5: Solve for x
x = 362,177,860,244,995,968/684,721,642.40 - Step 6: Final answer
x = 528,941,744.82
Related Problems
Find fourth proportional to 342,360,821.20, 472,418,074.88 and 191,661,729.04
Half scale
Find fourth proportional to 1,369,443,284.80, 1,889,672,299.52 and 766,646,916.16
Double scale
Find fourth proportional to 684,721,643.40, 944,836,151.14 and 383,323,459.08
Similar ratio
Find fourth proportional to 1,027,082,463.60, 1,417,254,224.64 and 574,985,187.12
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.