Finding the Fourth Proportional to 487,518.12, 672,653.70 and 306,259.56
Calculator
Solution
The fourth proportional to 487,518.12, 672,653.70 and 306,259.56 is: 422,561.99
Step by Step Solution
- Step 1: Write the proportion equation
487,518.12 : 672,653.70 = 306,259.56 : x - Step 2: Convert to fraction form
487,518.12/672,653.70 = 306,259.56/x - Step 3: Cross multiply
487,518.12x = 672,653.70 × 306,259.56 - Step 4: Simplify right side
487,518.12x = 206,006,626,194.37 - Step 5: Solve for x
x = 206,006,626,194.37/487,518.12 - Step 6: Final answer
x = 422,561.99
Related Problems
Find fourth proportional to 243,759.06, 336,326.85 and 153,129.78
Half scale
Find fourth proportional to 975,036.24, 1,345,307.40 and 612,519.12
Double scale
Find fourth proportional to 487,519.12, 672,655.08 and 306,260.56
Similar ratio
Find fourth proportional to 731,277.18, 1,008,980.55 and 459,389.34
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.