Finding the Fourth Proportional to 7,972,331.80, 11,958,497.70 and 7,762,379.80
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Solution
The fourth proportional to 7,972,331.80, 11,958,497.70 and 7,762,379.80 is: 11,643,569.70
Step by Step Solution
- Step 1: Write the proportion equation
7,972,331.80 : 11,958,497.70 = 7,762,379.80 : x - Step 2: Convert to fraction form
7,972,331.80/11,958,497.70 = 7,762,379.80/x - Step 3: Cross multiply
7,972,331.80x = 11,958,497.70 × 7,762,379.80 - Step 4: Simplify right side
7,972,331.80x = 92,826,400,984,826.45 - Step 5: Solve for x
x = 92,826,400,984,826.45/7,972,331.80 - Step 6: Final answer
x = 11,643,569.70
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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.