Finding the Fourth Proportional to 1,129,505.04, 1,694,918.52 and 420,022.80
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Solution
The fourth proportional to 1,129,505.04, 1,694,918.52 and 420,022.80 is: 630,279.99
Step by Step Solution
- Step 1: Write the proportion equation
1,129,505.04 : 1,694,918.52 = 420,022.80 : x - Step 2: Convert to fraction form
1,129,505.04/1,694,918.52 = 420,022.80/x - Step 3: Cross multiply
1,129,505.04x = 1,694,918.52 × 420,022.80 - Step 4: Simplify right side
1,129,505.04x = 711,904,422,542.26 - Step 5: Solve for x
x = 711,904,422,542.26/1,129,505.04 - Step 6: Final answer
x = 630,279.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.