Finding the Fourth Proportional to 630,472.02, 870,054.21 and 343,998.12
Calculator
Solution
The fourth proportional to 630,472.02, 870,054.21 and 343,998.12 is: 474,718.95
Step by Step Solution
- Step 1: Write the proportion equation
630,472.02 : 870,054.21 = 343,998.12 : x - Step 2: Convert to fraction form
630,472.02/870,054.21 = 343,998.12/x - Step 3: Cross multiply
630,472.02x = 870,054.21 × 343,998.12 - Step 4: Simplify right side
630,472.02x = 299,297,012,538.09 - Step 5: Solve for x
x = 299,297,012,538.09/630,472.02 - Step 6: Final answer
x = 474,718.95
Related Problems
Find fourth proportional to 315,236.01, 435,027.11 and 171,999.06
Half scale
Find fourth proportional to 1,260,944.04, 1,740,108.42 and 687,996.24
Double scale
Find fourth proportional to 630,473.02, 870,055.59 and 343,999.12
Similar ratio
Find fourth proportional to 945,708.03, 1,305,081.32 and 515,997.18
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.