Finding the Fourth Proportional to 521,983.26, 720,302.79 and 307,081.80
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Solution
The fourth proportional to 521,983.26, 720,302.79 and 307,081.80 is: 423,752.82
Step by Step Solution
- Step 1: Write the proportion equation
521,983.26 : 720,302.79 = 307,081.80 : x - Step 2: Convert to fraction form
521,983.26/720,302.79 = 307,081.80/x - Step 3: Cross multiply
521,983.26x = 720,302.79 × 307,081.80 - Step 4: Simplify right side
521,983.26x = 221,191,877,298.22 - Step 5: Solve for x
x = 221,191,877,298.22/521,983.26 - Step 6: Final answer
x = 423,752.82
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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.