Finding the Fourth Proportional to 641,398.08, 885,116.28 and 354,918.08
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Solution
The fourth proportional to 641,398.08, 885,116.28 and 354,918.08 is: 489,779.72
Step by Step Solution
- Step 1: Write the proportion equation
641,398.08 : 885,116.28 = 354,918.08 : x - Step 2: Convert to fraction form
641,398.08/885,116.28 = 354,918.08/x - Step 3: Cross multiply
641,398.08x = 885,116.28 × 354,918.08 - Step 4: Simplify right side
641,398.08x = 314,143,770,674.34 - Step 5: Solve for x
x = 314,143,770,674.34/641,398.08 - Step 6: Final answer
x = 489,779.72
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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.