Finding the Fourth Proportional to 10,457,936.80, 15,686,905.20 and 6,365,841.10
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Solution
The fourth proportional to 10,457,936.80, 15,686,905.20 and 6,365,841.10 is: 9,548,761.65
Step by Step Solution
- Step 1: Write the proportion equation
10,457,936.80 : 15,686,905.20 = 6,365,841.10 : x - Step 2: Convert to fraction form
10,457,936.80/15,686,905.20 = 6,365,841.10/x - Step 3: Cross multiply
10,457,936.80x = 15,686,905.20 × 6,365,841.10 - Step 4: Simplify right side
10,457,936.80x = 99,860,345,853,963.70 - Step 5: Solve for x
x = 99,860,345,853,963.70/10,457,936.80 - Step 6: Final answer
x = 9,548,761.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.