Finding the Fourth Proportional to 715,399.79, 987,306.62 and 409,572.09
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Solution
The fourth proportional to 715,399.79, 987,306.62 and 409,572.09 is: 565,240.92
Step by Step Solution
- Step 1: Write the proportion equation
715,399.79 : 987,306.62 = 409,572.09 : x - Step 2: Convert to fraction form
715,399.79/987,306.62 = 409,572.09/x - Step 3: Cross multiply
715,399.79x = 987,306.62 × 409,572.09 - Step 4: Simplify right side
715,399.79x = 404,373,233,776.38 - Step 5: Solve for x
x = 404,373,233,776.38/715,399.79 - Step 6: Final answer
x = 565,240.92
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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.