Finding the Fourth Proportional to 378,888,043.68, 522,865,495.71 and 205,047,787.68
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Solution
The fourth proportional to 378,888,043.68, 522,865,495.71 and 205,047,787.68 is: 282,965,944.53
Step by Step Solution
- Step 1: Write the proportion equation
378,888,043.68 : 522,865,495.71 = 205,047,787.68 : x - Step 2: Convert to fraction form
378,888,043.68/522,865,495.71 = 205,047,787.68/x - Step 3: Cross multiply
378,888,043.68x = 522,865,495.71 × 205,047,787.68 - Step 4: Simplify right side
378,888,043.68x = 107,212,413,149,542,032 - Step 5: Solve for x
x = 107,212,413,149,542,032/378,888,043.68 - Step 6: Final answer
x = 282,965,944.53
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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.