Finding the Fourth Proportional to 3,888,013.92, 5,365,462.56 and 2,169,134.80
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Solution
The fourth proportional to 3,888,013.92, 5,365,462.56 and 2,169,134.80 is: 2,993,407.89
Step by Step Solution
- Step 1: Write the proportion equation
3,888,013.92 : 5,365,462.56 = 2,169,134.80 : x - Step 2: Convert to fraction form
3,888,013.92/5,365,462.56 = 2,169,134.80/x - Step 3: Cross multiply
3,888,013.92x = 5,365,462.56 × 2,169,134.80 - Step 4: Simplify right side
3,888,013.92x = 11,638,411,556,993.09 - Step 5: Solve for x
x = 11,638,411,556,993.09/3,888,013.92 - Step 6: Final answer
x = 2,993,407.89
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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.