Finding the Fourth Proportional to 7,243,890.80, 9,996,510.84 and 3,936,156.08
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Solution
The fourth proportional to 7,243,890.80, 9,996,510.84 and 3,936,156.08 is: 5,431,863.62
Step by Step Solution
- Step 1: Write the proportion equation
7,243,890.80 : 9,996,510.84 = 3,936,156.08 : x - Step 2: Convert to fraction form
7,243,890.80/9,996,510.84 = 3,936,156.08/x - Step 3: Cross multiply
7,243,890.80x = 9,996,510.84 × 3,936,156.08 - Step 4: Simplify right side
7,243,890.80x = 39,347,826,921,651.91 - Step 5: Solve for x
x = 39,347,826,921,651.91/7,243,890.80 - Step 6: Final answer
x = 5,431,863.62
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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.