Finding the Fourth Proportional to 690,628,508.96, 1,036,679,891.64 and 297,349,965.44
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Solution
The fourth proportional to 690,628,508.96, 1,036,679,891.64 and 297,349,965.44 is: 446,342,318.56
Step by Step Solution
- Step 1: Write the proportion equation
690,628,508.96 : 1,036,679,891.64 = 297,349,965.44 : x - Step 2: Convert to fraction form
690,628,508.96/1,036,679,891.64 = 297,349,965.44/x - Step 3: Cross multiply
690,628,508.96x = 1,036,679,891.64 × 297,349,965.44 - Step 4: Simplify right side
690,628,508.96x = 308,256,729,951,496,960 - Step 5: Solve for x
x = 308,256,729,951,496,960/690,628,508.96 - Step 6: Final answer
x = 446,342,318.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.