Finding the Fourth Proportional to 664,545,611.70, 996,818,417.55 and 664,545,611.70
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Solution
The fourth proportional to 664,545,611.70, 996,818,417.55 and 664,545,611.70 is: 996,818,417.55
Step by Step Solution
- Step 1: Write the proportion equation
664,545,611.70 : 996,818,417.55 = 664,545,611.70 : x - Step 2: Convert to fraction form
664,545,611.70/996,818,417.55 = 664,545,611.70/x - Step 3: Cross multiply
664,545,611.70x = 996,818,417.55 × 664,545,611.70 - Step 4: Simplify right side
664,545,611.70x = 662,431,305,044,590,720 - Step 5: Solve for x
x = 662,431,305,044,590,720/664,545,611.70 - Step 6: Final answer
x = 996,818,417.55
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Double scale
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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.