Finding the Fourth Proportional to 5,202,034.21, 7,178,645.08 and 2,878,786.95
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Solution
The fourth proportional to 5,202,034.21, 7,178,645.08 and 2,878,786.95 is: 3,972,636.26
Step by Step Solution
- Step 1: Write the proportion equation
5,202,034.21 : 7,178,645.08 = 2,878,786.95 : x - Step 2: Convert to fraction form
5,202,034.21/7,178,645.08 = 2,878,786.95/x - Step 3: Cross multiply
5,202,034.21x = 7,178,645.08 × 2,878,786.95 - Step 4: Simplify right side
5,202,034.21x = 20,665,789,731,895.51 - Step 5: Solve for x
x = 20,665,789,731,895.51/5,202,034.21 - Step 6: Final answer
x = 3,972,636.26
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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.