Finding the Fourth Proportional to 512,986.68, 769,480.02 and 139,009.68
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Solution
The fourth proportional to 512,986.68, 769,480.02 and 139,009.68 is: 208,514.52
Step by Step Solution
- Step 1: Write the proportion equation
512,986.68 : 769,480.02 = 139,009.68 : x - Step 2: Convert to fraction form
512,986.68/769,480.02 = 139,009.68/x - Step 3: Cross multiply
512,986.68x = 769,480.02 × 139,009.68 - Step 4: Simplify right side
512,986.68x = 106,965,171,346.59 - Step 5: Solve for x
x = 106,965,171,346.59/512,986.68 - Step 6: Final answer
x = 208,514.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.