Finding the Fourth Proportional to 631,270.16, 871,138.74 and 344,791.28
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Solution
The fourth proportional to 631,270.16, 871,138.74 and 344,791.28 is: 475,804.28
Step by Step Solution
- Step 1: Write the proportion equation
631,270.16 : 871,138.74 = 344,791.28 : x - Step 2: Convert to fraction form
631,270.16/871,138.74 = 344,791.28/x - Step 3: Cross multiply
631,270.16x = 871,138.74 × 344,791.28 - Step 4: Simplify right side
631,270.16x = 300,361,041,222.19 - Step 5: Solve for x
x = 300,361,041,222.19/631,270.16 - Step 6: Final answer
x = 475,804.28
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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.