Finding the Fourth Proportional to 567,485.18, 783,134.79 and 312,845.48
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Solution
The fourth proportional to 567,485.18, 783,134.79 and 312,845.48 is: 431,729.65
Step by Step Solution
- Step 1: Write the proportion equation
567,485.18 : 783,134.79 = 312,845.48 : x - Step 2: Convert to fraction form
567,485.18/783,134.79 = 312,845.48/x - Step 3: Cross multiply
567,485.18x = 783,134.79 × 312,845.48 - Step 4: Simplify right side
567,485.18x = 245,000,179,282.25 - Step 5: Solve for x
x = 245,000,179,282.25/567,485.18 - Step 6: Final answer
x = 431,729.65
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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.