Finding the Fourth Proportional to 641,635.23, 885,436.68 and 369,703.65
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Solution
The fourth proportional to 641,635.23, 885,436.68 and 369,703.65 is: 510,179.55
Step by Step Solution
- Step 1: Write the proportion equation
641,635.23 : 885,436.68 = 369,703.65 : x - Step 2: Convert to fraction form
641,635.23/885,436.68 = 369,703.65/x - Step 3: Cross multiply
641,635.23x = 885,436.68 × 369,703.65 - Step 4: Simplify right side
641,635.23x = 327,349,172,439.88 - Step 5: Solve for x
x = 327,349,172,439.88/641,635.23 - Step 6: Final answer
x = 510,179.55
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1.5x scale
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.