Finding the Fourth Proportional to 687,994,052.70, 965,912,651.70 and 687,994,052.70
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Solution
The fourth proportional to 687,994,052.70, 965,912,651.70 and 687,994,052.70 is: 965,912,651.70
Step by Step Solution
- Step 1: Write the proportion equation
687,994,052.70 : 965,912,651.70 = 687,994,052.70 : x - Step 2: Convert to fraction form
687,994,052.70/965,912,651.70 = 687,994,052.70/x - Step 3: Cross multiply
687,994,052.70x = 965,912,651.70 × 687,994,052.70 - Step 4: Simplify right side
687,994,052.70x = 664,542,159,797,286,656 - Step 5: Solve for x
x = 664,542,159,797,286,656/687,994,052.70 - Step 6: Final answer
x = 965,912,651.70
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.