Finding the Third Proportional to 7,781,672 and 12,431,388
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Solution
The third proportional to 7,781,672 and 12,431,388 is: 19,859,409.08
Step by Step Solution
- Step 1: Write the proportion equation
7,781,672 : 12,431,388 = 12,431,388 : x - Step 2: Convert to fraction form
7,781,672/12,431,388 = 12,431,388/x - Step 3: Cross multiply
7,781,672x = 12,431,388 × 12,431,388 - Step 4: Simplify right side
7,781,672x = 154,539,407,606,544 - Step 5: Solve for x
x = 154,539,407,606,544/7,781,672 - Step 6: Final answer
x = 19,859,409.08
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Why These Related Problems?
These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.