Finding the Fourth Proportional to 663,129.13, 915,118.20 and 361,323.13
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Solution
The fourth proportional to 663,129.13, 915,118.20 and 361,323.13 is: 498,625.92
Step by Step Solution
- Step 1: Write the proportion equation
663,129.13 : 915,118.20 = 361,323.13 : x - Step 2: Convert to fraction form
663,129.13/915,118.20 = 361,323.13/x - Step 3: Cross multiply
663,129.13x = 915,118.20 × 361,323.13 - Step 4: Simplify right side
663,129.13x = 330,653,372,343.97 - Step 5: Solve for x
x = 330,653,372,343.97/663,129.13 - Step 6: Final answer
x = 498,625.92
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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.