Finding the Fourth Proportional to 871,642.06, 1,202,858.79 and 489,660.64
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Solution
The fourth proportional to 871,642.06, 1,202,858.79 and 489,660.64 is: 675,727.61
Step by Step Solution
- Step 1: Write the proportion equation
871,642.06 : 1,202,858.79 = 489,660.64 : x - Step 2: Convert to fraction form
871,642.06/1,202,858.79 = 489,660.64/x - Step 3: Cross multiply
871,642.06x = 1,202,858.79 × 489,660.64 - Step 4: Simplify right side
871,642.06x = 588,992,604,941.03 - Step 5: Solve for x
x = 588,992,604,941.03/871,642.06 - Step 6: Final answer
x = 675,727.61
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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.