Finding the Fourth Proportional to 911,268.09, 1,257,542.06 and 503,398.40
Calculator
Solution
The fourth proportional to 911,268.09, 1,257,542.06 and 503,398.40 is: 694,685.42
Step by Step Solution
- Step 1: Write the proportion equation
911,268.09 : 1,257,542.06 = 503,398.40 : x - Step 2: Convert to fraction form
911,268.09/1,257,542.06 = 503,398.40/x - Step 3: Cross multiply
911,268.09x = 1,257,542.06 × 503,398.40 - Step 4: Simplify right side
911,268.09x = 633,044,652,132.00 - Step 5: Solve for x
x = 633,044,652,132.00/911,268.09 - Step 6: Final answer
x = 694,685.42
Related Problems
Find fourth proportional to 455,634.05, 628,771.03 and 251,699.20
Half scale
Find fourth proportional to 1,822,536.18, 2,515,084.11 and 1,006,796.79
Double scale
Find fourth proportional to 911,269.09, 1,257,543.43 and 503,399.40
Similar ratio
Find fourth proportional to 1,366,902.14, 1,886,313.08 and 755,097.59
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.