Finding the Fourth Proportional to 378,540,888.93, 522,387,149.49 and 208,995,454.62
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Solution
The fourth proportional to 378,540,888.93, 522,387,149.49 and 208,995,454.62 is: 288,414,126.42
Step by Step Solution
- Step 1: Write the proportion equation
378,540,888.93 : 522,387,149.49 = 208,995,454.62 : x - Step 2: Convert to fraction form
378,540,888.93/522,387,149.49 = 208,995,454.62/x - Step 3: Cross multiply
378,540,888.93x = 522,387,149.49 × 208,995,454.62 - Step 4: Simplify right side
378,540,888.93x = 109,176,539,795,308,448 - Step 5: Solve for x
x = 109,176,539,795,308,448/378,540,888.93 - Step 6: Final answer
x = 288,414,126.42
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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.