Finding the Fourth Proportional to 1,286,661.72, 1,929,997.08 and 327,117.42
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Solution
The fourth proportional to 1,286,661.72, 1,929,997.08 and 327,117.42 is: 490,677.27
Step by Step Solution
- Step 1: Write the proportion equation
1,286,661.72 : 1,929,997.08 = 327,117.42 : x - Step 2: Convert to fraction form
1,286,661.72/1,929,997.08 = 327,117.42/x - Step 3: Cross multiply
1,286,661.72x = 1,929,997.08 × 327,117.42 - Step 4: Simplify right side
1,286,661.72x = 631,335,665,417.13 - Step 5: Solve for x
x = 631,335,665,417.13/1,286,661.72 - Step 6: Final answer
x = 490,677.27
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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.