Finding the Fourth Proportional to 497,431.80, 686,976.92 and 342,785.18
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Solution
The fourth proportional to 497,431.80, 686,976.92 and 342,785.18 is: 473,402.59
Step by Step Solution
- Step 1: Write the proportion equation
497,431.80 : 686,976.92 = 342,785.18 : x - Step 2: Convert to fraction form
497,431.80/686,976.92 = 342,785.18/x - Step 3: Cross multiply
497,431.80x = 686,976.92 × 342,785.18 - Step 4: Simplify right side
497,431.80x = 235,485,502,029.24 - Step 5: Solve for x
x = 235,485,502,029.24/497,431.80 - Step 6: Final answer
x = 473,402.59
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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.