Finding the Fourth Proportional to 418,965,966.63, 578,129,538.33 and 258,004,361.97
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Solution
The fourth proportional to 418,965,966.63, 578,129,538.33 and 258,004,361.97 is: 356,019,234.38
Step by Step Solution
- Step 1: Write the proportion equation
418,965,966.63 : 578,129,538.33 = 258,004,361.97 : x - Step 2: Convert to fraction form
418,965,966.63/578,129,538.33 = 258,004,361.97/x - Step 3: Cross multiply
418,965,966.63x = 578,129,538.33 × 258,004,361.97 - Step 4: Simplify right side
418,965,966.63x = 149,159,942,672,842,304 - Step 5: Solve for x
x = 149,159,942,672,842,304/418,965,966.63 - Step 6: Final answer
x = 356,019,234.38
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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.