Finding the Fourth Proportional to 512,993.97, 708,385.62 and 319,731.53
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Solution
The fourth proportional to 512,993.97, 708,385.62 and 319,731.53 is: 441,512.43
Step by Step Solution
- Step 1: Write the proportion equation
512,993.97 : 708,385.62 = 319,731.53 : x - Step 2: Convert to fraction form
512,993.97/708,385.62 = 319,731.53/x - Step 3: Cross multiply
512,993.97x = 708,385.62 × 319,731.53 - Step 4: Simplify right side
512,993.97x = 226,493,214,570.67 - Step 5: Solve for x
x = 226,493,214,570.67/512,993.97 - Step 6: Final answer
x = 441,512.43
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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.