Finding the Fourth Proportional to 620,691.40, 856,340.94 and 403,171.84
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Solution
The fourth proportional to 620,691.40, 856,340.94 and 403,171.84 is: 556,238.66
Step by Step Solution
- Step 1: Write the proportion equation
620,691.40 : 856,340.94 = 403,171.84 : x - Step 2: Convert to fraction form
620,691.40/856,340.94 = 403,171.84/x - Step 3: Cross multiply
620,691.40x = 856,340.94 × 403,171.84 - Step 4: Simplify right side
620,691.40x = 345,252,552,447.13 - Step 5: Solve for x
x = 345,252,552,447.13/620,691.40 - Step 6: Final answer
x = 556,238.66
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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.