Finding the Fourth Proportional to 778,045,375.92, 1,073,699,408.57 and 420,813,551.49
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Solution
The fourth proportional to 778,045,375.92, 1,073,699,408.57 and 420,813,551.49 is: 580,720,964.79
Step by Step Solution
- Step 1: Write the proportion equation
778,045,375.92 : 1,073,699,408.57 = 420,813,551.49 : x - Step 2: Convert to fraction form
778,045,375.92/1,073,699,408.57 = 420,813,551.49/x - Step 3: Cross multiply
778,045,375.92x = 1,073,699,408.57 × 420,813,551.49 - Step 4: Simplify right side
778,045,375.92x = 451,827,261,353,054,272 - Step 5: Solve for x
x = 451,827,261,353,054,272/778,045,375.92 - Step 6: Final answer
x = 580,720,964.79
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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.