Finding the Fourth Proportional to 448,695.20, 672,135.60 and 279,696.80
Calculator
Solution
The fourth proportional to 448,695.20, 672,135.60 and 279,696.80 is: 418,979.69
Step by Step Solution
- Step 1: Write the proportion equation
448,695.20 : 672,135.60 = 279,696.80 : x - Step 2: Convert to fraction form
448,695.20/672,135.60 = 279,696.80/x - Step 3: Cross multiply
448,695.20x = 672,135.60 × 279,696.80 - Step 4: Simplify right side
448,695.20x = 187,994,176,486.08 - Step 5: Solve for x
x = 187,994,176,486.08/448,695.20 - Step 6: Final answer
x = 418,979.69
Related Problems
Find fourth proportional to 224,347.60, 336,067.80 and 139,848.40
Half scale
Find fourth proportional to 897,390.40, 1,344,271.20 and 559,393.60
Double scale
Find fourth proportional to 448,696.20, 672,137.10 and 279,697.80
Similar ratio
Find fourth proportional to 673,042.80, 1,008,203.40 and 419,545.20
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.