Finding the Fourth Proportional to 642,472.40, 886,598.69 and 355,989.98
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Solution
The fourth proportional to 642,472.40, 886,598.69 and 355,989.98 is: 491,258.84
Step by Step Solution
- Step 1: Write the proportion equation
642,472.40 : 886,598.69 = 355,989.98 : x - Step 2: Convert to fraction form
642,472.40/886,598.69 = 355,989.98/x - Step 3: Cross multiply
642,472.40x = 886,598.69 × 355,989.98 - Step 4: Simplify right side
642,472.40x = 315,620,250,357.67 - Step 5: Solve for x
x = 315,620,250,357.67/642,472.40 - Step 6: Final answer
x = 491,258.84
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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.