Finding the Fourth Proportional to 709,406.24, 978,972.53 and 387,121.82
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Solution
The fourth proportional to 709,406.24, 978,972.53 and 387,121.82 is: 534,223.70
Step by Step Solution
- Step 1: Write the proportion equation
709,406.24 : 978,972.53 = 387,121.82 : x - Step 2: Convert to fraction form
709,406.24/978,972.53 = 387,121.82/x - Step 3: Cross multiply
709,406.24x = 978,972.53 × 387,121.82 - Step 4: Simplify right side
709,406.24x = 378,981,620,713.13 - Step 5: Solve for x
x = 378,981,620,713.13/709,406.24 - Step 6: Final answer
x = 534,223.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.