Finding the Fourth Proportional to 908,335,694.53, 1,253,503,762.11 and 490,647,981.70
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Solution
The fourth proportional to 908,335,694.53, 1,253,503,762.11 and 490,647,981.70 is: 677,094,486.80
Step by Step Solution
- Step 1: Write the proportion equation
908,335,694.53 : 1,253,503,762.11 = 490,647,981.70 : x - Step 2: Convert to fraction form
908,335,694.53/1,253,503,762.11 = 490,647,981.70/x - Step 3: Cross multiply
908,335,694.53x = 1,253,503,762.11 × 490,647,981.70 - Step 4: Simplify right side
908,335,694.53x = 615,029,090,923,907,712 - Step 5: Solve for x
x = 615,029,090,923,907,712/908,335,694.53 - Step 6: Final answer
x = 677,094,486.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.