Finding the Fourth Proportional to 991,588.18, 1,367,888 and 647,625.62
Calculator
Solution
The fourth proportional to 991,588.18, 1,367,888 and 647,625.62 is: 893,394.39
Step by Step Solution
- Step 1: Write the proportion equation
991,588.18 : 1,367,888 = 647,625.62 : x - Step 2: Convert to fraction form
991,588.18/1,367,888 = 647,625.62/x - Step 3: Cross multiply
991,588.18x = 1,367,888 × 647,625.62 - Step 4: Simplify right side
991,588.18x = 885,879,314,090.56 - Step 5: Solve for x
x = 885,879,314,090.56/991,588.18 - Step 6: Final answer
x = 893,394.39
Related Problems
Find fourth proportional to 495,794.09, 683,944 and 323,812.81
Half scale
Find fourth proportional to 1,983,176.36, 2,735,776 and 1,295,251.24
Double scale
Find fourth proportional to 991,589.18, 1,367,889.38 and 647,626.62
Similar ratio
Find fourth proportional to 1,487,382.27, 2,051,832 and 971,438.43
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.