Finding the Fourth Proportional to 668,718.74, 923,189.82 and 515,420.96
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Solution
The fourth proportional to 668,718.74, 923,189.82 and 515,420.96 is: 711,556.82
Step by Step Solution
- Step 1: Write the proportion equation
668,718.74 : 923,189.82 = 515,420.96 : x - Step 2: Convert to fraction form
668,718.74/923,189.82 = 515,420.96/x - Step 3: Cross multiply
668,718.74x = 923,189.82 × 515,420.96 - Step 4: Simplify right side
668,718.74x = 475,831,383,286.63 - Step 5: Solve for x
x = 475,831,383,286.63/668,718.74 - Step 6: Final answer
x = 711,556.82
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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.