Finding the Fourth Proportional to 7,642,809.82, 10,543,057.62 and 4,543,128.41
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Solution
The fourth proportional to 7,642,809.82, 10,543,057.62 and 4,543,128.41 is: 6,267,127.64
Step by Step Solution
- Step 1: Write the proportion equation
7,642,809.82 : 10,543,057.62 = 4,543,128.41 : x - Step 2: Convert to fraction form
7,642,809.82/10,543,057.62 = 4,543,128.41/x - Step 3: Cross multiply
7,642,809.82x = 10,543,057.62 × 4,543,128.41 - Step 4: Simplify right side
7,642,809.82x = 47,898,464,601,688.98 - Step 5: Solve for x
x = 47,898,464,601,688.98/7,642,809.82 - Step 6: Final answer
x = 6,267,127.64
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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.