Finding the Fourth Proportional to 447,121,918.81, 670,969,856.63 and 216,965,450.53
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Solution
The fourth proportional to 447,121,918.81, 670,969,856.63 and 216,965,450.53 is: 325,587,431.78
Step by Step Solution
- Step 1: Write the proportion equation
447,121,918.81 : 670,969,856.63 = 216,965,450.53 : x - Step 2: Convert to fraction form
447,121,918.81/670,969,856.63 = 216,965,450.53/x - Step 3: Cross multiply
447,121,918.81x = 670,969,856.63 × 216,965,450.53 - Step 4: Simplify right side
447,121,918.81x = 145,577,277,235,777,472 - Step 5: Solve for x
x = 145,577,277,235,777,472/447,121,918.81 - Step 6: Final answer
x = 325,587,431.78
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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.