Finding the Fourth Proportional to 5,129,508.70, 7,078,668.78 and 2,806,379.26
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Solution
The fourth proportional to 5,129,508.70, 7,078,668.78 and 2,806,379.26 is: 3,872,774.26
Step by Step Solution
- Step 1: Write the proportion equation
5,129,508.70 : 7,078,668.78 = 2,806,379.26 : x - Step 2: Convert to fraction form
5,129,508.70/7,078,668.78 = 2,806,379.26/x - Step 3: Cross multiply
5,129,508.70x = 7,078,668.78 × 2,806,379.26 - Step 4: Simplify right side
5,129,508.70x = 19,865,429,252,601.50 - Step 5: Solve for x
x = 19,865,429,252,601.50/5,129,508.70 - Step 6: Final answer
x = 3,872,774.26
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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.