Finding the Fourth Proportional to 492,085.15, 679,091.90 and 288,116.99
Calculator
Solution
The fourth proportional to 492,085.15, 679,091.90 and 288,116.99 is: 397,609.86
Step by Step Solution
- Step 1: Write the proportion equation
492,085.15 : 679,091.90 = 288,116.99 : x - Step 2: Convert to fraction form
492,085.15/679,091.90 = 288,116.99/x - Step 3: Cross multiply
492,085.15x = 679,091.90 × 288,116.99 - Step 4: Simplify right side
492,085.15x = 195,657,909,325.34 - Step 5: Solve for x
x = 195,657,909,325.34/492,085.15 - Step 6: Final answer
x = 397,609.86
Related Problems
Find fourth proportional to 246,042.58, 339,545.95 and 144,058.49
Half scale
Find fourth proportional to 984,170.30, 1,358,183.79 and 576,233.97
Double scale
Find fourth proportional to 492,086.15, 679,093.28 and 288,117.99
Similar ratio
Find fourth proportional to 738,127.73, 1,018,637.84 and 432,175.48
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.