Finding the Fourth Proportional to 401,129.53, 553,239.88 and 340,899.55
Calculator
Solution
The fourth proportional to 401,129.53, 553,239.88 and 340,899.55 is: 470,170.39
Step by Step Solution
- Step 1: Write the proportion equation
401,129.53 : 553,239.88 = 340,899.55 : x - Step 2: Convert to fraction form
401,129.53/553,239.88 = 340,899.55/x - Step 3: Cross multiply
401,129.53x = 553,239.88 × 340,899.55 - Step 4: Simplify right side
401,129.53x = 188,599,226,134.05 - Step 5: Solve for x
x = 188,599,226,134.05/401,129.53 - Step 6: Final answer
x = 470,170.39
Related Problems
Find fourth proportional to 200,564.77, 276,619.94 and 170,449.78
Half scale
Find fourth proportional to 802,259.06, 1,106,479.76 and 681,799.10
Double scale
Find fourth proportional to 401,130.53, 553,241.26 and 340,900.55
Similar ratio
Find fourth proportional to 601,694.30, 829,859.82 and 511,349.33
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.