Finding the Fourth Proportional to 1,225,624,043.49, 1,691,883,065.13 and 823,970,736.51
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Solution
The fourth proportional to 1,225,624,043.49, 1,691,883,065.13 and 823,970,736.51 is: 1,137,430,472.80
Step by Step Solution
- Step 1: Write the proportion equation
1,225,624,043.49 : 1,691,883,065.13 = 823,970,736.51 : x - Step 2: Convert to fraction form
1,225,624,043.49/1,691,883,065.13 = 823,970,736.51/x - Step 3: Cross multiply
1,225,624,043.49x = 1,691,883,065.13 × 823,970,736.51 - Step 4: Simplify right side
1,225,624,043.49x = 1,394,062,135,263,962,368 - Step 5: Solve for x
x = 1,394,062,135,263,962,368/1,225,624,043.49 - Step 6: Final answer
x = 1,137,430,472.80
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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.