Finding the Fourth Proportional to 644,560,251,163.76, 889,495,911,966.98 and 351,591,558,481.65
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Solution
The fourth proportional to 644,560,251,163.76, 889,495,911,966.98 and 351,591,558,481.65 is: 485,197,859,140.20
Step by Step Solution
- Step 1: Write the proportion equation
644,560,251,163.76 : 889,495,911,966.98 = 351,591,558,481.65 : x - Step 2: Convert to fraction form
644,560,251,163.76/889,495,911,966.98 = 351,591,558,481.65/x - Step 3: Cross multiply
644,560,251,163.76x = 889,495,911,966.98 × 351,591,558,481.65 - Step 4: Simplify right side
644,560,251,163.76x = 312,739,253,951,527,039,008,768 - Step 5: Solve for x
x = 312,739,253,951,527,039,008,768/644,560,251,163.76 - Step 6: Final answer
x = 485,197,859,140.20
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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.