Finding the Fourth Proportional to 492,291.09, 679,488.09 and 320,636.79
Calculator
Solution
The fourth proportional to 492,291.09, 679,488.09 and 320,636.79 is: 442,561.09
Step by Step Solution
- Step 1: Write the proportion equation
492,291.09 : 679,488.09 = 320,636.79 : x - Step 2: Convert to fraction form
492,291.09/679,488.09 = 320,636.79/x - Step 3: Cross multiply
492,291.09x = 679,488.09 × 320,636.79 - Step 4: Simplify right side
492,291.09x = 217,868,880,020.83 - Step 5: Solve for x
x = 217,868,880,020.83/492,291.09 - Step 6: Final answer
x = 442,561.09
Related Problems
Find fourth proportional to 246,145.55, 339,744.05 and 160,318.40
Half scale
Find fourth proportional to 984,582.18, 1,358,976.18 and 641,273.58
Double scale
Find fourth proportional to 492,292.09, 679,489.47 and 320,637.79
Similar ratio
Find fourth proportional to 738,436.64, 1,019,232.14 and 480,955.19
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.