Finding the Fourth Proportional to 996,459,563.20, 1,495,114,497.60 and 478,623,452.80
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Solution
The fourth proportional to 996,459,563.20, 1,495,114,497.60 and 478,623,452.80 is: 718,139,390.30
Step by Step Solution
- Step 1: Write the proportion equation
996,459,563.20 : 1,495,114,497.60 = 478,623,452.80 : x - Step 2: Convert to fraction form
996,459,563.20/1,495,114,497.60 = 478,623,452.80/x - Step 3: Cross multiply
996,459,563.20x = 1,495,114,497.60 × 478,623,452.80 - Step 4: Simplify right side
996,459,563.20x = 715,596,863,172,649,344 - Step 5: Solve for x
x = 715,596,863,172,649,344/996,459,563.20 - Step 6: Final answer
x = 718,139,390.30
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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.