Finding the Fourth Proportional to 638,749.16, 881,474.64 and 348,361.19
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Solution
The fourth proportional to 638,749.16, 881,474.64 and 348,361.19 is: 480,738.88
Step by Step Solution
- Step 1: Write the proportion equation
638,749.16 : 881,474.64 = 348,361.19 : x - Step 2: Convert to fraction form
638,749.16/881,474.64 = 348,361.19/x - Step 3: Cross multiply
638,749.16x = 881,474.64 × 348,361.19 - Step 4: Simplify right side
638,749.16x = 307,071,552,137.02 - Step 5: Solve for x
x = 307,071,552,137.02/638,749.16 - Step 6: Final answer
x = 480,738.88
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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.