Finding the Fourth Proportional to 856,728,163.80, 1,285,134,236.10 and 448,581,475.80
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Solution
The fourth proportional to 856,728,163.80, 1,285,134,236.10 and 448,581,475.80 is: 672,894,199.81
Step by Step Solution
- Step 1: Write the proportion equation
856,728,163.80 : 1,285,134,236.10 = 448,581,475.80 : x - Step 2: Convert to fraction form
856,728,163.80/1,285,134,236.10 = 448,581,475.80/x - Step 3: Cross multiply
856,728,163.80x = 1,285,134,236.10 × 448,581,475.80 - Step 4: Simplify right side
856,728,163.80x = 576,487,412,230,843,648 - Step 5: Solve for x
x = 576,487,412,230,843,648/856,728,163.80 - Step 6: Final answer
x = 672,894,199.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.