Finding the Fourth Proportional to 6,419,299.70, 8,853,468.23 and 5,643,271.29
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Solution
The fourth proportional to 6,419,299.70, 8,853,468.23 and 5,643,271.29 is: 7,783,173.45
Step by Step Solution
- Step 1: Write the proportion equation
6,419,299.70 : 8,853,468.23 = 5,643,271.29 : x - Step 2: Convert to fraction form
6,419,299.70/8,853,468.23 = 5,643,271.29/x - Step 3: Cross multiply
6,419,299.70x = 8,853,468.23 × 5,643,271.29 - Step 4: Simplify right side
6,419,299.70x = 49,962,523,028,936.09 - Step 5: Solve for x
x = 49,962,523,028,936.09/6,419,299.70 - Step 6: Final answer
x = 7,783,173.45
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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.