Finding the Fourth Proportional to 378,888,040.18, 522,865,490.88 and 205,047,784.18
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Solution
The fourth proportional to 378,888,040.18, 522,865,490.88 and 205,047,784.18 is: 282,965,939.70
Step by Step Solution
- Step 1: Write the proportion equation
378,888,040.18 : 522,865,490.88 = 205,047,784.18 : x - Step 2: Convert to fraction form
378,888,040.18/522,865,490.88 = 205,047,784.18/x - Step 3: Cross multiply
378,888,040.18x = 522,865,490.88 × 205,047,784.18 - Step 4: Simplify right side
378,888,040.18x = 107,212,410,329,132,000 - Step 5: Solve for x
x = 107,212,410,329,132,000/378,888,040.18 - Step 6: Final answer
x = 282,965,939.70
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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.