Finding the Fourth Proportional to 7,769,322.40, 10,721,709.84 and 4,331,777.44
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Solution
The fourth proportional to 7,769,322.40, 10,721,709.84 and 4,331,777.44 is: 5,977,877.92
Step by Step Solution
- Step 1: Write the proportion equation
7,769,322.40 : 10,721,709.84 = 4,331,777.44 : x - Step 2: Convert to fraction form
7,769,322.40/10,721,709.84 = 4,331,777.44/x - Step 3: Cross multiply
7,769,322.40x = 10,721,709.84 × 4,331,777.44 - Step 4: Simplify right side
7,769,322.40x = 46,444,060,803,138.02 - Step 5: Solve for x
x = 46,444,060,803,138.02/7,769,322.40 - Step 6: Final answer
x = 5,977,877.92
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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.