Finding the Fourth Proportional to 910,208.42, 1,256,559.87 and 664,917.74
Calculator
Solution
The fourth proportional to 910,208.42, 1,256,559.87 and 664,917.74 is: 917,931.47
Step by Step Solution
- Step 1: Write the proportion equation
910,208.42 : 1,256,559.87 = 664,917.74 : x - Step 2: Convert to fraction form
910,208.42/1,256,559.87 = 664,917.74/x - Step 3: Cross multiply
910,208.42x = 1,256,559.87 × 664,917.74 - Step 4: Simplify right side
910,208.42x = 835,508,948,935.09 - Step 5: Solve for x
x = 835,508,948,935.09/910,208.42 - Step 6: Final answer
x = 917,931.47
Related Problems
Find fourth proportional to 455,104.21, 628,279.94 and 332,458.87
Half scale
Find fourth proportional to 1,820,416.84, 2,513,119.74 and 1,329,835.48
Double scale
Find fourth proportional to 910,209.42, 1,256,561.25 and 664,918.74
Similar ratio
Find fourth proportional to 1,365,312.63, 1,884,839.81 and 997,376.61
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.