Finding the Fourth Proportional to 5,115,705.62, 7,057,997.16 and 3,645,845.70
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Solution
The fourth proportional to 5,115,705.62, 7,057,997.16 and 3,645,845.70 is: 5,030,072.19
Step by Step Solution
- Step 1: Write the proportion equation
5,115,705.62 : 7,057,997.16 = 3,645,845.70 : x - Step 2: Convert to fraction form
5,115,705.62/7,057,997.16 = 3,645,845.70/x - Step 3: Cross multiply
5,115,705.62x = 7,057,997.16 × 3,645,845.70 - Step 4: Simplify right side
5,115,705.62x = 25,732,368,596,398.21 - Step 5: Solve for x
x = 25,732,368,596,398.21/5,115,705.62 - Step 6: Final answer
x = 5,030,072.19
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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.