Finding the Third Proportional to 307,721.53 and 639,905.06
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Solution
The third proportional to 307,721.53 and 639,905.06 is: 1,330,678.71
Step by Step Solution
- Step 1: Write the proportion equation
307,721.53 : 639,905.06 = 639,905.06 : x - Step 2: Convert to fraction form
307,721.53/639,905.06 = 639,905.06/x - Step 3: Cross multiply
307,721.53x = 639,905.06 × 639,905.06 - Step 4: Simplify right side
307,721.53x = 409,478,489,013.13 - Step 5: Solve for x
x = 409,478,489,013.13/307,721.53 - Step 6: Final answer
x = 1,330,678.71
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Why These Related Problems?
These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.