Finding the Fourth Proportional to 1,392,806,964.96, 1,922,073,546.99 and 766,261,940.81
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Solution
The fourth proportional to 1,392,806,964.96, 1,922,073,546.99 and 766,261,940.81 is: 1,057,441,442.75
Step by Step Solution
- Step 1: Write the proportion equation
1,392,806,964.96 : 1,922,073,546.99 = 766,261,940.81 : x - Step 2: Convert to fraction form
1,392,806,964.96/1,922,073,546.99 = 766,261,940.81/x - Step 3: Cross multiply
1,392,806,964.96x = 1,922,073,546.99 × 766,261,940.81 - Step 4: Simplify right side
1,392,806,964.96x = 1,472,811,806,496,118,016 - Step 5: Solve for x
x = 1,472,811,806,496,118,016/1,392,806,964.96 - Step 6: Final answer
x = 1,057,441,442.75
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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.