Finding the Fourth Proportional to 515,810.74, 711,869.97 and 289,457.14
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Solution
The fourth proportional to 515,810.74, 711,869.97 and 289,457.14 is: 399,479.56
Step by Step Solution
- Step 1: Write the proportion equation
515,810.74 : 711,869.97 = 289,457.14 : x - Step 2: Convert to fraction form
515,810.74/711,869.97 = 289,457.14/x - Step 3: Cross multiply
515,810.74x = 711,869.97 × 289,457.14 - Step 4: Simplify right side
515,810.74x = 206,055,845,568.09 - Step 5: Solve for x
x = 206,055,845,568.09/515,810.74 - Step 6: Final answer
x = 399,479.56
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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.