Finding the Fourth Proportional to 7,021,935.87, 9,689,782.05 and 3,965,559.63
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Solution
The fourth proportional to 7,021,935.87, 9,689,782.05 and 3,965,559.63 is: 5,472,195.88
Step by Step Solution
- Step 1: Write the proportion equation
7,021,935.87 : 9,689,782.05 = 3,965,559.63 : x - Step 2: Convert to fraction form
7,021,935.87/9,689,782.05 = 3,965,559.63/x - Step 3: Cross multiply
7,021,935.87x = 9,689,782.05 × 3,965,559.63 - Step 4: Simplify right side
7,021,935.87x = 38,425,408,520,978.64 - Step 5: Solve for x
x = 38,425,408,520,978.64/7,021,935.87 - Step 6: Final answer
x = 5,472,195.88
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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.