Finding the Fourth Proportional to 1,028,379,045.12, 1,419,597,387.84 and 694,304,142
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Solution
The fourth proportional to 1,028,379,045.12, 1,419,597,387.84 and 694,304,142 is: 958,432,934.85
Step by Step Solution
- Step 1: Write the proportion equation
1,028,379,045.12 : 1,419,597,387.84 = 694,304,142 : x - Step 2: Convert to fraction form
1,028,379,045.12/1,419,597,387.84 = 694,304,142/x - Step 3: Cross multiply
1,028,379,045.12x = 1,419,597,387.84 × 694,304,142 - Step 4: Simplify right side
1,028,379,045.12x = 985,632,346,349,692,416 - Step 5: Solve for x
x = 985,632,346,349,692,416/1,028,379,045.12 - Step 6: Final answer
x = 958,432,934.85
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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.