Finding the Fourth Proportional to 6,409,511.28, 8,851,121.16 and 4,121,646.96
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Solution
The fourth proportional to 6,409,511.28, 8,851,121.16 and 4,121,646.96 is: 5,691,728.28
Step by Step Solution
- Step 1: Write the proportion equation
6,409,511.28 : 8,851,121.16 = 4,121,646.96 : x - Step 2: Convert to fraction form
6,409,511.28/8,851,121.16 = 4,121,646.96/x - Step 3: Cross multiply
6,409,511.28x = 8,851,121.16 × 4,121,646.96 - Step 4: Simplify right side
6,409,511.28x = 36,481,196,621,705.67 - Step 5: Solve for x
x = 36,481,196,621,705.67/6,409,511.28 - Step 6: Final answer
x = 5,691,728.28
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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.