Finding the Fourth Proportional to 386,277,779.20, 579,416,668.80 and 204,879,251.20
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Solution
The fourth proportional to 386,277,779.20, 579,416,668.80 and 204,879,251.20 is: 307,318,876.80
Step by Step Solution
- Step 1: Write the proportion equation
386,277,779.20 : 579,416,668.80 = 204,879,251.20 : x - Step 2: Convert to fraction form
386,277,779.20/579,416,668.80 = 204,879,251.20/x - Step 3: Cross multiply
386,277,779.20x = 579,416,668.80 × 204,879,251.20 - Step 4: Simplify right side
386,277,779.20x = 118,710,453,236,542,384 - Step 5: Solve for x
x = 118,710,453,236,542,384/386,277,779.20 - Step 6: Final answer
x = 307,318,876.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.