Finding the Fourth Proportional to 386,277,781.70, 579,416,672.55 and 204,879,253.70
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Solution
The fourth proportional to 386,277,781.70, 579,416,672.55 and 204,879,253.70 is: 307,318,880.55
Step by Step Solution
- Step 1: Write the proportion equation
386,277,781.70 : 579,416,672.55 = 204,879,253.70 : x - Step 2: Convert to fraction form
386,277,781.70/579,416,672.55 = 204,879,253.70/x - Step 3: Cross multiply
386,277,781.70x = 579,416,672.55 × 204,879,253.70 - Step 4: Simplify right side
386,277,781.70x = 118,710,455,453,381,264 - Step 5: Solve for x
x = 118,710,455,453,381,264/386,277,781.70 - Step 6: Final answer
x = 307,318,880.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.