Finding the Fourth Proportional to 786,488.49, 1,089,463.96 and 770,545.26
Calculator
Solution
The fourth proportional to 786,488.49, 1,089,463.96 and 770,545.26 is: 1,067,378.99
Step by Step Solution
- Step 1: Write the proportion equation
786,488.49 : 1,089,463.96 = 770,545.26 : x - Step 2: Convert to fraction form
786,488.49/1,089,463.96 = 770,545.26/x - Step 3: Cross multiply
786,488.49x = 1,089,463.96 × 770,545.26 - Step 4: Simplify right side
786,488.49x = 839,481,291,282.01 - Step 5: Solve for x
x = 839,481,291,282.01/786,488.49 - Step 6: Final answer
x = 1,067,378.99
Related Problems
Find fourth proportional to 393,244.25, 544,731.98 and 385,272.63
Half scale
Find fourth proportional to 1,572,976.98, 2,178,927.92 and 1,541,090.52
Double scale
Find fourth proportional to 786,489.49, 1,089,465.35 and 770,546.26
Similar ratio
Find fourth proportional to 1,179,732.74, 1,634,195.94 and 1,155,817.89
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.