Finding the Fourth Proportional to 467,476,639.36, 645,324,395.52 and 279,371,311.36
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Solution
The fourth proportional to 467,476,639.36, 645,324,395.52 and 279,371,311.36 is: 385,655,896.89
Step by Step Solution
- Step 1: Write the proportion equation
467,476,639.36 : 645,324,395.52 = 279,371,311.36 : x - Step 2: Convert to fraction form
467,476,639.36/645,324,395.52 = 279,371,311.36/x - Step 3: Cross multiply
467,476,639.36x = 645,324,395.52 × 279,371,311.36 - Step 4: Simplify right side
467,476,639.36x = 180,285,122,629,021,728 - Step 5: Solve for x
x = 180,285,122,629,021,728/467,476,639.36 - Step 6: Final answer
x = 385,655,896.89
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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.