Finding the Fourth Proportional to 663,129.75, 915,119.19 and 361,323.75
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Solution
The fourth proportional to 663,129.75, 915,119.19 and 361,323.75 is: 498,626.85
Step by Step Solution
- Step 1: Write the proportion equation
663,129.75 : 915,119.19 = 361,323.75 : x - Step 2: Convert to fraction form
663,129.75/915,119.19 = 361,323.75/x - Step 3: Cross multiply
663,129.75x = 915,119.19 × 361,323.75 - Step 4: Simplify right side
663,129.75x = 330,654,297,427.76 - Step 5: Solve for x
x = 330,654,297,427.76/663,129.75 - Step 6: Final answer
x = 498,626.85
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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.