Finding the Fourth Proportional to 906,639.36, 1,359,943.68 and 315,648
Calculator
Solution
The fourth proportional to 906,639.36, 1,359,943.68 and 315,648 is: 473,466.65
Step by Step Solution
- Step 1: Write the proportion equation
906,639.36 : 1,359,943.68 = 315,648 : x - Step 2: Convert to fraction form
906,639.36/1,359,943.68 = 315,648/x - Step 3: Cross multiply
906,639.36x = 1,359,943.68 × 315,648 - Step 4: Simplify right side
906,639.36x = 429,263,502,704.64 - Step 5: Solve for x
x = 429,263,502,704.64/906,639.36 - Step 6: Final answer
x = 473,466.65
Related Problems
Find fourth proportional to 453,319.68, 679,971.84 and 157,824
Half scale
Find fourth proportional to 1,813,278.72, 2,719,887.36 and 631,296
Double scale
Find fourth proportional to 906,640.36, 1,359,945.18 and 315,649
Similar ratio
Find fourth proportional to 1,359,959.04, 2,039,915.52 and 473,472
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.