Finding the Fourth Proportional to 867,638.20, 1,299,729.30 and 763,727.80
Calculator
Solution
The fourth proportional to 867,638.20, 1,299,729.30 and 763,727.80 is: 1,144,070.65
Step by Step Solution
- Step 1: Write the proportion equation
867,638.20 : 1,299,729.30 = 763,727.80 : x - Step 2: Convert to fraction form
867,638.20/1,299,729.30 = 763,727.80/x - Step 3: Cross multiply
867,638.20x = 1,299,729.30 × 763,727.80 - Step 4: Simplify right side
867,638.20x = 992,639,398,884.54 - Step 5: Solve for x
x = 992,639,398,884.54/867,638.20 - Step 6: Final answer
x = 1,144,070.65
Related Problems
Find fourth proportional to 433,819.10, 649,864.65 and 381,863.90
Half scale
Find fourth proportional to 1,735,276.40, 2,599,458.60 and 1,527,455.60
Double scale
Find fourth proportional to 867,639.20, 1,299,730.80 and 763,728.80
Similar ratio
Find fourth proportional to 1,301,457.30, 1,949,593.95 and 1,145,591.70
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.