Finding the Fourth Proportional to 7,021,934.37, 9,689,779.98 and 3,965,558.13
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Solution
The fourth proportional to 7,021,934.37, 9,689,779.98 and 3,965,558.13 is: 5,472,193.81
Step by Step Solution
- Step 1: Write the proportion equation
7,021,934.37 : 9,689,779.98 = 3,965,558.13 : x - Step 2: Convert to fraction form
7,021,934.37/9,689,779.98 = 3,965,558.13/x - Step 3: Cross multiply
7,021,934.37x = 9,689,779.98 × 3,965,558.13 - Step 4: Simplify right side
7,021,934.37x = 38,425,385,777,600.23 - Step 5: Solve for x
x = 38,425,385,777,600.23/7,021,934.37 - Step 6: Final answer
x = 5,472,193.81
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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.