Finding the Fourth Proportional to 8,991,889.21, 12,409,102.34 and 4,917,508.21
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Solution
The fourth proportional to 8,991,889.21, 12,409,102.34 and 4,917,508.21 is: 6,786,322.79
Step by Step Solution
- Step 1: Write the proportion equation
8,991,889.21 : 12,409,102.34 = 4,917,508.21 : x - Step 2: Convert to fraction form
8,991,889.21/12,409,102.34 = 4,917,508.21/x - Step 3: Cross multiply
8,991,889.21x = 12,409,102.34 × 4,917,508.21 - Step 4: Simplify right side
8,991,889.21x = 61,021,862,635,680.21 - Step 5: Solve for x
x = 61,021,862,635,680.21/8,991,889.21 - Step 6: Final answer
x = 6,786,322.79
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1.5x scale
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.