Finding the Fourth Proportional to 663,976,580.80, 916,302,246.72 and 366,618,020.08
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Solution
The fourth proportional to 663,976,580.80, 916,302,246.72 and 366,618,020.08 is: 505,940,909.97
Step by Step Solution
- Step 1: Write the proportion equation
663,976,580.80 : 916,302,246.72 = 366,618,020.08 : x - Step 2: Convert to fraction form
663,976,580.80/916,302,246.72 = 366,618,020.08/x - Step 3: Cross multiply
663,976,580.80x = 916,302,246.72 × 366,618,020.08 - Step 4: Simplify right side
663,976,580.80x = 335,932,915,487,342,080 - Step 5: Solve for x
x = 335,932,915,487,342,080/663,976,580.80 - Step 6: Final answer
x = 505,940,909.97
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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.