Finding the Fourth Proportional to 885,817, 1,328,725.50 and 287,278.84
Calculator
Solution
The fourth proportional to 885,817, 1,328,725.50 and 287,278.84 is: 430,918.26
Step by Step Solution
- Step 1: Write the proportion equation
885,817 : 1,328,725.50 = 287,278.84 : x - Step 2: Convert to fraction form
885,817/1,328,725.50 = 287,278.84/x - Step 3: Cross multiply
885,817x = 1,328,725.50 × 287,278.84 - Step 4: Simplify right side
885,817x = 381,714,720,318.42 - Step 5: Solve for x
x = 381,714,720,318.42/885,817 - Step 6: Final answer
x = 430,918.26
Related Problems
Find fourth proportional to 442,908.50, 664,362.75 and 143,639.42
Half scale
Find fourth proportional to 1,771,634, 2,657,451 and 574,557.68
Double scale
Find fourth proportional to 885,818, 1,328,727 and 287,279.84
Similar ratio
Find fourth proportional to 1,328,725.50, 1,993,088.25 and 430,918.26
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.