Finding the Fourth Proportional to 812,689,325.88, 1,121,492,194.62 and 478,183,514.04
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Solution
The fourth proportional to 812,689,325.88, 1,121,492,194.62 and 478,183,514.04 is: 659,882,025.66
Step by Step Solution
- Step 1: Write the proportion equation
812,689,325.88 : 1,121,492,194.62 = 478,183,514.04 : x - Step 2: Convert to fraction form
812,689,325.88/1,121,492,194.62 = 478,183,514.04/x - Step 3: Cross multiply
812,689,325.88x = 1,121,492,194.62 × 478,183,514.04 - Step 4: Simplify right side
812,689,325.88x = 536,279,078,591,823,168 - Step 5: Solve for x
x = 536,279,078,591,823,168/812,689,325.88 - Step 6: Final answer
x = 659,882,025.66
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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.