Finding the Fourth Proportional to 5,110,921.78, 7,052,948.49 and 2,819,033.26
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Solution
The fourth proportional to 5,110,921.78, 7,052,948.49 and 2,819,033.26 is: 3,890,197.74
Step by Step Solution
- Step 1: Write the proportion equation
5,110,921.78 : 7,052,948.49 = 2,819,033.26 : x - Step 2: Convert to fraction form
5,110,921.78/7,052,948.49 = 2,819,033.26/x - Step 3: Cross multiply
5,110,921.78x = 7,052,948.49 × 2,819,033.26 - Step 4: Simplify right side
5,110,921.78x = 19,882,496,374,376.78 - Step 5: Solve for x
x = 19,882,496,374,376.78/5,110,921.78 - Step 6: Final answer
x = 3,890,197.74
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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.