Finding the Fourth Proportional to 547,859.40, 756,031.44 and 306,143.96
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Solution
The fourth proportional to 547,859.40, 756,031.44 and 306,143.96 is: 422,470.54
Step by Step Solution
- Step 1: Write the proportion equation
547,859.40 : 756,031.44 = 306,143.96 : x - Step 2: Convert to fraction form
547,859.40/756,031.44 = 306,143.96/x - Step 3: Cross multiply
547,859.40x = 756,031.44 × 306,143.96 - Step 4: Simplify right side
547,859.40x = 231,454,458,926.10 - Step 5: Solve for x
x = 231,454,458,926.10/547,859.40 - Step 6: Final answer
x = 422,470.54
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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.