Finding the Fourth Proportional to 523,328,825.67, 722,198,622.20 and 288,387,893.49
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Solution
The fourth proportional to 523,328,825.67, 722,198,622.20 and 288,387,893.49 is: 397,977,961.70
Step by Step Solution
- Step 1: Write the proportion equation
523,328,825.67 : 722,198,622.20 = 288,387,893.49 : x - Step 2: Convert to fraction form
523,328,825.67/722,198,622.20 = 288,387,893.49/x - Step 3: Cross multiply
523,328,825.67x = 722,198,622.20 × 288,387,893.49 - Step 4: Simplify right side
523,328,825.67x = 208,273,339,337,638,368 - Step 5: Solve for x
x = 208,273,339,337,638,368/523,328,825.67 - Step 6: Final answer
x = 397,977,961.70
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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.