Finding the Fourth Proportional to 809,802.20, 1,215,221.70 and 472,842.20
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Solution
The fourth proportional to 809,802.20, 1,215,221.70 and 472,842.20 is: 709,565.99
Step by Step Solution
- Step 1: Write the proportion equation
809,802.20 : 1,215,221.70 = 472,842.20 : x - Step 2: Convert to fraction form
809,802.20/1,215,221.70 = 472,842.20/x - Step 3: Cross multiply
809,802.20x = 1,215,221.70 × 472,842.20 - Step 4: Simplify right side
809,802.20x = 574,608,102,115.74 - Step 5: Solve for x
x = 574,608,102,115.74/809,802.20 - Step 6: Final answer
x = 709,565.99
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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.