Finding the Fourth Proportional to 8,972,364.70, 13,458,547.05 and 8,279,523.10
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Solution
The fourth proportional to 8,972,364.70, 13,458,547.05 and 8,279,523.10 is: 12,419,284.65
Step by Step Solution
- Step 1: Write the proportion equation
8,972,364.70 : 13,458,547.05 = 8,279,523.10 : x - Step 2: Convert to fraction form
8,972,364.70/13,458,547.05 = 8,279,523.10/x - Step 3: Cross multiply
8,972,364.70x = 13,458,547.05 × 8,279,523.10 - Step 4: Simplify right side
8,972,364.70x = 111,430,351,192,911.86 - Step 5: Solve for x
x = 111,430,351,192,911.86/8,972,364.70 - Step 6: Final answer
x = 12,419,284.65
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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.