Finding the Fourth Proportional to 7,890,331.70, 11,835,497.55 and 6,471,989.30
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Solution
The fourth proportional to 7,890,331.70, 11,835,497.55 and 6,471,989.30 is: 9,707,983.95
Step by Step Solution
- Step 1: Write the proportion equation
7,890,331.70 : 11,835,497.55 = 6,471,989.30 : x - Step 2: Convert to fraction form
7,890,331.70/11,835,497.55 = 6,471,989.30/x - Step 3: Cross multiply
7,890,331.70x = 11,835,497.55 × 6,471,989.30 - Step 4: Simplify right side
7,890,331.70x = 76,599,213,503,776.22 - Step 5: Solve for x
x = 76,599,213,503,776.22/7,890,331.70 - Step 6: Final answer
x = 9,707,983.95
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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.