Finding the Fourth Proportional to 3,178,958.34, 4,386,828.97 and 1,802,394.66
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Solution
The fourth proportional to 3,178,958.34, 4,386,828.97 and 1,802,394.66 is: 2,487,228.92
Step by Step Solution
- Step 1: Write the proportion equation
3,178,958.34 : 4,386,828.97 = 1,802,394.66 : x - Step 2: Convert to fraction form
3,178,958.34/4,386,828.97 = 1,802,394.66/x - Step 3: Cross multiply
3,178,958.34x = 4,386,828.97 × 1,802,394.66 - Step 4: Simplify right side
3,178,958.34x = 7,906,797,109,861.30 - Step 5: Solve for x
x = 7,906,797,109,861.30/3,178,958.34 - Step 6: Final answer
x = 2,487,228.92
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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.