Finding the Fourth Proportional to 642,701.07, 886,980.56 and 356,310.99
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Solution
The fourth proportional to 642,701.07, 886,980.56 and 356,310.99 is: 491,738.59
Step by Step Solution
- Step 1: Write the proportion equation
642,701.07 : 886,980.56 = 356,310.99 : x - Step 2: Convert to fraction form
642,701.07/886,980.56 = 356,310.99/x - Step 3: Cross multiply
642,701.07x = 886,980.56 × 356,310.99 - Step 4: Simplify right side
642,701.07x = 316,040,919,662.80 - Step 5: Solve for x
x = 316,040,919,662.80/642,701.07 - Step 6: Final answer
x = 491,738.59
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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.