Finding the Fourth Proportional to 911,997.09, 1,367,257.73 and 379,917.81
Calculator
Solution
The fourth proportional to 911,997.09, 1,367,257.73 and 379,917.81 is: 569,569.32
Step by Step Solution
- Step 1: Write the proportion equation
911,997.09 : 1,367,257.73 = 379,917.81 : x - Step 2: Convert to fraction form
911,997.09/1,367,257.73 = 379,917.81/x - Step 3: Cross multiply
911,997.09x = 1,367,257.73 × 379,917.81 - Step 4: Simplify right side
911,997.09x = 519,445,560,587.58 - Step 5: Solve for x
x = 519,445,560,587.58/911,997.09 - Step 6: Final answer
x = 569,569.32
Related Problems
Find fourth proportional to 455,998.55, 683,628.86 and 189,958.91
Half scale
Find fourth proportional to 1,823,994.18, 2,734,515.45 and 759,835.62
Double scale
Find fourth proportional to 911,998.09, 1,367,259.22 and 379,918.81
Similar ratio
Find fourth proportional to 1,367,995.64, 2,050,886.59 and 569,876.72
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.