Finding the Fourth Proportional to 641,763.99, 885,599.16 and 351,319.35
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Solution
The fourth proportional to 641,763.99, 885,599.16 and 351,319.35 is: 484,801.46
Step by Step Solution
- Step 1: Write the proportion equation
641,763.99 : 885,599.16 = 351,319.35 : x - Step 2: Convert to fraction form
641,763.99/885,599.16 = 351,319.35/x - Step 3: Cross multiply
641,763.99x = 885,599.16 × 351,319.35 - Step 4: Simplify right side
641,763.99x = 311,128,121,251.75 - Step 5: Solve for x
x = 311,128,121,251.75/641,763.99 - Step 6: Final answer
x = 484,801.46
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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.