Finding the Fourth Proportional to 515,926.13, 712,045.49 and 289,571.63
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Solution
The fourth proportional to 515,926.13, 712,045.49 and 289,571.63 is: 399,646.69
Step by Step Solution
- Step 1: Write the proportion equation
515,926.13 : 712,045.49 = 289,571.63 : x - Step 2: Convert to fraction form
515,926.13/712,045.49 = 289,571.63/x - Step 3: Cross multiply
515,926.13x = 712,045.49 × 289,571.63 - Step 4: Simplify right side
515,926.13x = 206,188,168,165.36 - Step 5: Solve for x
x = 206,188,168,165.36/515,926.13 - Step 6: Final answer
x = 399,646.69
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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.