Finding the Fourth Proportional to 771,396.40, 1,152,403.62 and 499,308.09
Calculator
Solution
The fourth proportional to 771,396.40, 1,152,403.62 and 499,308.09 is: 745,925.76
Step by Step Solution
- Step 1: Write the proportion equation
771,396.40 : 1,152,403.62 = 499,308.09 : x - Step 2: Convert to fraction form
771,396.40/1,152,403.62 = 499,308.09/x - Step 3: Cross multiply
771,396.40x = 1,152,403.62 × 499,308.09 - Step 4: Simplify right side
771,396.40x = 575,404,448,430.28 - Step 5: Solve for x
x = 575,404,448,430.28/771,396.40 - Step 6: Final answer
x = 745,925.76
Related Problems
Find fourth proportional to 385,698.20, 576,201.81 and 249,654.04
Half scale
Find fourth proportional to 1,542,792.80, 2,304,807.25 and 998,616.17
Double scale
Find fourth proportional to 771,397.40, 1,152,405.12 and 499,309.09
Similar ratio
Find fourth proportional to 1,157,094.60, 1,728,605.44 and 748,962.13
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.