Finding the Fourth Proportional to 910,033,499.79, 1,256,713,541.43 and 860,455,015.99
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Solution
The fourth proportional to 910,033,499.79, 1,256,713,541.43 and 860,455,015.99 is: 1,188,247,982.78
Step by Step Solution
- Step 1: Write the proportion equation
910,033,499.79 : 1,256,713,541.43 = 860,455,015.99 : x - Step 2: Convert to fraction form
910,033,499.79/1,256,713,541.43 = 860,455,015.99/x - Step 3: Cross multiply
910,033,499.79x = 1,256,713,541.43 × 860,455,015.99 - Step 4: Simplify right side
910,033,499.79x = 1,081,345,470,386,000,256 - Step 5: Solve for x
x = 1,081,345,470,386,000,256/910,033,499.79 - Step 6: Final answer
x = 1,188,247,982.78
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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.