Finding the Fourth Proportional to 664,438,991.70, 996,658,487.55 and 664,438,991.70
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Solution
The fourth proportional to 664,438,991.70, 996,658,487.55 and 664,438,991.70 is: 996,658,487.55
Step by Step Solution
- Step 1: Write the proportion equation
664,438,991.70 : 996,658,487.55 = 664,438,991.70 : x - Step 2: Convert to fraction form
664,438,991.70/996,658,487.55 = 664,438,991.70/x - Step 3: Cross multiply
664,438,991.70x = 996,658,487.55 × 664,438,991.70 - Step 4: Simplify right side
664,438,991.70x = 662,218,760,536,968,960 - Step 5: Solve for x
x = 662,218,760,536,968,960/664,438,991.70 - Step 6: Final answer
x = 996,658,487.55
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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.