Finding the Fourth Proportional to 943,381,471.20, 1,415,072,206.80 and 288,331,231.20
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Solution
The fourth proportional to 943,381,471.20, 1,415,072,206.80 and 288,331,231.20 is: 432,496,846.80
Step by Step Solution
- Step 1: Write the proportion equation
943,381,471.20 : 1,415,072,206.80 = 288,331,231.20 : x - Step 2: Convert to fraction form
943,381,471.20/1,415,072,206.80 = 288,331,231.20/x - Step 3: Cross multiply
943,381,471.20x = 1,415,072,206.80 × 288,331,231.20 - Step 4: Simplify right side
943,381,471.20x = 408,009,511,623,544,960 - Step 5: Solve for x
x = 408,009,511,623,544,960/943,381,471.20 - Step 6: Final answer
x = 432,496,846.80
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Similar ratio
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1.5x scale
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.