Finding the Fourth Proportional to 5,147,889.32, 7,721,843.36 and 2,113,140.08
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Solution
The fourth proportional to 5,147,889.32, 7,721,843.36 and 2,113,140.08 is: 3,169,713.96
Step by Step Solution
- Step 1: Write the proportion equation
5,147,889.32 : 7,721,843.36 = 2,113,140.08 : x - Step 2: Convert to fraction form
5,147,889.32/7,721,843.36 = 2,113,140.08/x - Step 3: Cross multiply
5,147,889.32x = 7,721,843.36 × 2,113,140.08 - Step 4: Simplify right side
5,147,889.32x = 16,317,336,646,322.95 - Step 5: Solve for x
x = 16,317,336,646,322.95/5,147,889.32 - Step 6: Final answer
x = 3,169,713.96
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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.