Finding the Fourth Proportional to 759,929.28, 1,048,733.28 and 420,391.68
Calculator
Solution
The fourth proportional to 759,929.28, 1,048,733.28 and 420,391.68 is: 580,157.60
Step by Step Solution
- Step 1: Write the proportion equation
759,929.28 : 1,048,733.28 = 420,391.68 : x - Step 2: Convert to fraction form
759,929.28/1,048,733.28 = 420,391.68/x - Step 3: Cross multiply
759,929.28x = 1,048,733.28 × 420,391.68 - Step 4: Simplify right side
759,929.28x = 440,878,745,451.11 - Step 5: Solve for x
x = 440,878,745,451.11/759,929.28 - Step 6: Final answer
x = 580,157.60
Related Problems
Find fourth proportional to 379,964.64, 524,366.64 and 210,195.84
Half scale
Find fourth proportional to 1,519,858.56, 2,097,466.56 and 840,783.36
Double scale
Find fourth proportional to 759,930.28, 1,048,734.66 and 420,392.68
Similar ratio
Find fourth proportional to 1,139,893.92, 1,573,099.92 and 630,587.52
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.