Finding the Fourth Proportional to 855,172,121.74, 1,282,290,558.84 and 679,040,677.75
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Solution
The fourth proportional to 855,172,121.74, 1,282,290,558.84 and 679,040,677.75 is: 1,018,189,704.75
Step by Step Solution
- Step 1: Write the proportion equation
855,172,121.74 : 1,282,290,558.84 = 679,040,677.75 : x - Step 2: Convert to fraction form
855,172,121.74/1,282,290,558.84 = 679,040,677.75/x - Step 3: Cross multiply
855,172,121.74x = 1,282,290,558.84 × 679,040,677.75 - Step 4: Simplify right side
855,172,121.74x = 870,727,450,147,139,840 - Step 5: Solve for x
x = 870,727,450,147,139,840/855,172,121.74 - Step 6: Final answer
x = 1,018,189,704.75
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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.