Finding the Fourth Proportional to 422,478.54, 582,699.79 and 306,021.81
Calculator
Solution
The fourth proportional to 422,478.54, 582,699.79 and 306,021.81 is: 422,077.88
Step by Step Solution
- Step 1: Write the proportion equation
422,478.54 : 582,699.79 = 306,021.81 : x - Step 2: Convert to fraction form
422,478.54/582,699.79 = 306,021.81/x - Step 3: Cross multiply
422,478.54x = 582,699.79 × 306,021.81 - Step 4: Simplify right side
422,478.54x = 178,318,844,422.42 - Step 5: Solve for x
x = 178,318,844,422.42/422,478.54 - Step 6: Final answer
x = 422,077.88
Related Problems
Find fourth proportional to 211,239.27, 291,349.90 and 153,010.91
Half scale
Find fourth proportional to 844,957.07, 1,165,399.58 and 612,043.62
Double scale
Find fourth proportional to 422,479.54, 582,701.17 and 306,022.81
Similar ratio
Find fourth proportional to 633,717.80, 874,049.69 and 459,032.72
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.