Finding the Fourth Proportional to 515,853.69, 711,900.33 and 286,410.99
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Solution
The fourth proportional to 515,853.69, 711,900.33 and 286,410.99 is: 395,259.51
Step by Step Solution
- Step 1: Write the proportion equation
515,853.69 : 711,900.33 = 286,410.99 : x - Step 2: Convert to fraction form
515,853.69/711,900.33 = 286,410.99/x - Step 3: Cross multiply
515,853.69x = 711,900.33 × 286,410.99 - Step 4: Simplify right side
515,853.69x = 203,896,077,938.61 - Step 5: Solve for x
x = 203,896,077,938.61/515,853.69 - Step 6: Final answer
x = 395,259.51
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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.