Finding the Fourth Proportional to 1,396,764,361.97, 1,927,581,352.36 and 761,719,502.78
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Solution
The fourth proportional to 1,396,764,361.97, 1,927,581,352.36 and 761,719,502.78 is: 1,051,198,290.32
Step by Step Solution
- Step 1: Write the proportion equation
1,396,764,361.97 : 1,927,581,352.36 = 761,719,502.78 : x - Step 2: Convert to fraction form
1,396,764,361.97/1,927,581,352.36 = 761,719,502.78/x - Step 3: Cross multiply
1,396,764,361.97x = 1,927,581,352.36 × 761,719,502.78 - Step 4: Simplify right side
1,396,764,361.97x = 1,468,276,309,283,850,496 - Step 5: Solve for x
x = 1,468,276,309,283,850,496/1,396,764,361.97 - Step 6: Final answer
x = 1,051,198,290.32
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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.