Finding the Third Proportional to 7,881,979 and 11,879,346
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Solution
The third proportional to 7,881,979 and 11,879,346 is: 17,903,988.50
Step by Step Solution
- Step 1: Write the proportion equation
7,881,979 : 11,879,346 = 11,879,346 : x - Step 2: Convert to fraction form
7,881,979/11,879,346 = 11,879,346/x - Step 3: Cross multiply
7,881,979x = 11,879,346 × 11,879,346 - Step 4: Simplify right side
7,881,979x = 141,118,861,387,716 - Step 5: Solve for x
x = 141,118,861,387,716/7,881,979 - Step 6: Final answer
x = 17,903,988.50
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.