Finding the Fourth Proportional to 631,507.12, 871,469.62 and 345,021.06
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Solution
The fourth proportional to 631,507.12, 871,469.62 and 345,021.06 is: 476,123.49
Step by Step Solution
- Step 1: Write the proportion equation
631,507.12 : 871,469.62 = 345,021.06 : x - Step 2: Convert to fraction form
631,507.12/871,469.62 = 345,021.06/x - Step 3: Cross multiply
631,507.12x = 871,469.62 × 345,021.06 - Step 4: Simplify right side
631,507.12x = 300,675,372,050.20 - Step 5: Solve for x
x = 300,675,372,050.20/631,507.12 - Step 6: Final answer
x = 476,123.49
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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.