Finding the Fourth Proportional to 831,039.70, 1,246,559.55 and 689,322.10
Calculator
Solution
The fourth proportional to 831,039.70, 1,246,559.55 and 689,322.10 is: 1,033,983.15
Step by Step Solution
- Step 1: Write the proportion equation
831,039.70 : 1,246,559.55 = 689,322.10 : x - Step 2: Convert to fraction form
831,039.70/1,246,559.55 = 689,322.10/x - Step 3: Cross multiply
831,039.70x = 1,246,559.55 × 689,322.10 - Step 4: Simplify right side
831,039.70x = 859,281,046,781.06 - Step 5: Solve for x
x = 859,281,046,781.06/831,039.70 - Step 6: Final answer
x = 1,033,983.15
Related Problems
Find fourth proportional to 415,519.85, 623,279.78 and 344,661.05
Half scale
Find fourth proportional to 1,662,079.40, 2,493,119.10 and 1,378,644.20
Double scale
Find fourth proportional to 831,040.70, 1,246,561.05 and 689,323.10
Similar ratio
Find fourth proportional to 1,246,559.55, 1,869,839.33 and 1,033,983.15
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.