Finding the Fourth Proportional to 641,587.26, 885,379.70 and 355,101.20
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Solution
The fourth proportional to 641,587.26, 885,379.70 and 355,101.20 is: 490,033.71
Step by Step Solution
- Step 1: Write the proportion equation
641,587.26 : 885,379.70 = 355,101.20 : x - Step 2: Convert to fraction form
641,587.26/885,379.70 = 355,101.20/x - Step 3: Cross multiply
641,587.26x = 885,379.70 × 355,101.20 - Step 4: Simplify right side
641,587.26x = 314,399,387,723.24 - Step 5: Solve for x
x = 314,399,387,723.24/641,587.26 - Step 6: Final answer
x = 490,033.71
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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.