Finding the Fourth Proportional to 644,560,251,163.25, 889,495,911,966.30 and 351,591,558,481.15
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Solution
The fourth proportional to 644,560,251,163.25, 889,495,911,966.30 and 351,591,558,481.15 is: 485,197,859,139.53
Step by Step Solution
- Step 1: Write the proportion equation
644,560,251,163.25 : 889,495,911,966.30 = 351,591,558,481.15 : x - Step 2: Convert to fraction form
644,560,251,163.25/889,495,911,966.30 = 351,591,558,481.15/x - Step 3: Cross multiply
644,560,251,163.25x = 889,495,911,966.30 × 351,591,558,481.15 - Step 4: Simplify right side
644,560,251,163.25x = 312,739,253,950,843,266,793,472 - Step 5: Solve for x
x = 312,739,253,950,843,266,793,472/644,560,251,163.25 - Step 6: Final answer
x = 485,197,859,139.53
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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.