Finding the Fourth Proportional to 7,206,840.45, 9,945,439.41 and 3,943,655.56
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Solution
The fourth proportional to 7,206,840.45, 9,945,439.41 and 3,943,655.56 is: 5,442,244.45
Step by Step Solution
- Step 1: Write the proportion equation
7,206,840.45 : 9,945,439.41 = 3,943,655.56 : x - Step 2: Convert to fraction form
7,206,840.45/9,945,439.41 = 3,943,655.56/x - Step 3: Cross multiply
7,206,840.45x = 9,945,439.41 × 3,943,655.56 - Step 4: Simplify right side
7,206,840.45x = 39,221,387,425,889.62 - Step 5: Solve for x
x = 39,221,387,425,889.62/7,206,840.45 - Step 6: Final answer
x = 5,442,244.45
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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.