Finding the Fourth Proportional to 821,669,342.40, 1,133,917,393.68 and 445,337,949.60
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Solution
The fourth proportional to 821,669,342.40, 1,133,917,393.68 and 445,337,949.60 is: 614,573,796.37
Step by Step Solution
- Step 1: Write the proportion equation
821,669,342.40 : 1,133,917,393.68 = 445,337,949.60 : x - Step 2: Convert to fraction form
821,669,342.40/1,133,917,393.68 = 445,337,949.60/x - Step 3: Cross multiply
821,669,342.40x = 1,133,917,393.68 × 445,337,949.60 - Step 4: Simplify right side
821,669,342.40x = 504,976,447,117,227,264 - Step 5: Solve for x
x = 504,976,447,117,227,264/821,669,342.40 - Step 6: Final answer
x = 614,573,796.37
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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.