Finding the Fourth Proportional to 591,189.09, 815,973.83 and 387,121.49
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Solution
The fourth proportional to 591,189.09, 815,973.83 and 387,121.49 is: 534,314.67
Step by Step Solution
- Step 1: Write the proportion equation
591,189.09 : 815,973.83 = 387,121.49 : x - Step 2: Convert to fraction form
591,189.09/815,973.83 = 387,121.49/x - Step 3: Cross multiply
591,189.09x = 815,973.83 × 387,121.49 - Step 4: Simplify right side
591,189.09x = 315,881,004,870.61 - Step 5: Solve for x
x = 315,881,004,870.61/591,189.09 - Step 6: Final answer
x = 534,314.67
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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.