Finding the Fourth Proportional to 636,721.24, 878,704.86 and 350,236.12
Calculator
Solution
The fourth proportional to 636,721.24, 878,704.86 and 350,236.12 is: 483,342.10
Step by Step Solution
- Step 1: Write the proportion equation
636,721.24 : 878,704.86 = 350,236.12 : x - Step 2: Convert to fraction form
636,721.24/878,704.86 = 350,236.12/x - Step 3: Cross multiply
636,721.24x = 878,704.86 × 350,236.12 - Step 4: Simplify right side
636,721.24x = 307,754,180,791.54 - Step 5: Solve for x
x = 307,754,180,791.54/636,721.24 - Step 6: Final answer
x = 483,342.10
Related Problems
Find fourth proportional to 318,360.62, 439,352.43 and 175,118.06
Half scale
Find fourth proportional to 1,273,442.48, 1,757,409.72 and 700,472.24
Double scale
Find fourth proportional to 636,722.24, 878,706.24 and 350,237.12
Similar ratio
Find fourth proportional to 955,081.86, 1,318,057.29 and 525,354.18
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.