Finding the Fourth Proportional to 392,338.70, 539,728.44 and 343,721.66
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Solution
The fourth proportional to 392,338.70, 539,728.44 and 343,721.66 is: 472,847.45
Step by Step Solution
- Step 1: Write the proportion equation
392,338.70 : 539,728.44 = 343,721.66 : x - Step 2: Convert to fraction form
392,338.70/539,728.44 = 343,721.66/x - Step 3: Cross multiply
392,338.70x = 539,728.44 × 343,721.66 - Step 4: Simplify right side
392,338.70x = 185,516,355,346.01 - Step 5: Solve for x
x = 185,516,355,346.01/392,338.70 - Step 6: Final answer
x = 472,847.45
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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.