Finding the Fourth Proportional to 7,381,352.70, 11,072,029.05 and 7,215,464.70
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Solution
The fourth proportional to 7,381,352.70, 11,072,029.05 and 7,215,464.70 is: 10,823,197.05
Step by Step Solution
- Step 1: Write the proportion equation
7,381,352.70 : 11,072,029.05 = 7,215,464.70 : x - Step 2: Convert to fraction form
7,381,352.70/11,072,029.05 = 7,215,464.70/x - Step 3: Cross multiply
7,381,352.70x = 11,072,029.05 × 7,215,464.70 - Step 4: Simplify right side
7,381,352.70x = 79,889,834,767,649.55 - Step 5: Solve for x
x = 79,889,834,767,649.55/7,381,352.70 - Step 6: Final answer
x = 10,823,197.05
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Double scale
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Similar ratio
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1.5x scale
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.