Finding the Fourth Proportional to 641,974.23, 885,837.56 and 355,486.95
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Solution
The fourth proportional to 641,974.23, 885,837.56 and 355,486.95 is: 490,523.88
Step by Step Solution
- Step 1: Write the proportion equation
641,974.23 : 885,837.56 = 355,486.95 : x - Step 2: Convert to fraction form
641,974.23/885,837.56 = 355,486.95/x - Step 3: Cross multiply
641,974.23x = 885,837.56 × 355,486.95 - Step 4: Simplify right side
641,974.23x = 314,903,690,622.41 - Step 5: Solve for x
x = 314,903,690,622.41/641,974.23 - Step 6: Final answer
x = 490,523.88
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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.