Finding the Third Proportional to 399,432 and 869,388
Calculator
Solution
The third proportional to 399,432 and 869,388 is: 1,892,275.77
Step by Step Solution
- Step 1: Write the proportion equation
399,432 : 869,388 = 869,388 : x - Step 2: Convert to fraction form
399,432/869,388 = 869,388/x - Step 3: Cross multiply
399,432x = 869,388 × 869,388 - Step 4: Simplify right side
399,432x = 755,835,494,544 - Step 5: Solve for x
x = 755,835,494,544/399,432 - Step 6: Final answer
x = 1,892,275.77
Related Problems
Find third proportional to 199,716 and 434,694
Half scale
Find third proportional to 798,864 and 1,738,776
Double scale
Find third proportional to 399,434 and 869,392
Similar ratio
Find third proportional to 599,148 and 1,304,082
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.