Finding the Fourth Proportional to 3,607,986.81, 5,413,758.62 and 1,689,028.09
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Solution
The fourth proportional to 3,607,986.81, 5,413,758.62 and 1,689,028.09 is: 2,534,374.67
Step by Step Solution
- Step 1: Write the proportion equation
3,607,986.81 : 5,413,758.62 = 1,689,028.09 : x - Step 2: Convert to fraction form
3,607,986.81/5,413,758.62 = 1,689,028.09/x - Step 3: Cross multiply
3,607,986.81x = 5,413,758.62 × 1,689,028.09 - Step 4: Simplify right side
3,607,986.81x = 9,143,990,381,659.64 - Step 5: Solve for x
x = 9,143,990,381,659.64/3,607,986.81 - Step 6: Final answer
x = 2,534,374.67
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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.