Finding the Fourth Proportional to 557,272,657.48, 769,036,759.38 and 306,381,318.28
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Solution
The fourth proportional to 557,272,657.48, 769,036,759.38 and 306,381,318.28 is: 422,806,489.75
Step by Step Solution
- Step 1: Write the proportion equation
557,272,657.48 : 769,036,759.38 = 306,381,318.28 : x - Step 2: Convert to fraction form
557,272,657.48/769,036,759.38 = 306,381,318.28/x - Step 3: Cross multiply
557,272,657.48x = 769,036,759.38 × 306,381,318.28 - Step 4: Simplify right side
557,272,657.48x = 235,618,496,144,623,520 - Step 5: Solve for x
x = 235,618,496,144,623,520/557,272,657.48 - Step 6: Final answer
x = 422,806,489.75
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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.