Finding the Fourth Proportional to 1,388,858.84, 2,083,454.94 and 490,115
Calculator
Solution
The fourth proportional to 1,388,858.84, 2,083,454.94 and 490,115 is: 735,231.32
Step by Step Solution
- Step 1: Write the proportion equation
1,388,858.84 : 2,083,454.94 = 490,115 : x - Step 2: Convert to fraction form
1,388,858.84/2,083,454.94 = 490,115/x - Step 3: Cross multiply
1,388,858.84x = 2,083,454.94 × 490,115 - Step 4: Simplify right side
1,388,858.84x = 1,021,132,517,918.10 - Step 5: Solve for x
x = 1,021,132,517,918.10/1,388,858.84 - Step 6: Final answer
x = 735,231.32
Related Problems
Find fourth proportional to 694,429.42, 1,041,727.47 and 245,057.50
Half scale
Find fourth proportional to 2,777,717.68, 4,166,909.88 and 980,230
Double scale
Find fourth proportional to 1,388,859.84, 2,083,456.44 and 490,116
Similar ratio
Find fourth proportional to 2,083,288.26, 3,125,182.41 and 735,172.50
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.