Finding the Fourth Proportional to 1,319,709.22, 1,979,563.11 and 478,259.62
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Solution
The fourth proportional to 1,319,709.22, 1,979,563.11 and 478,259.62 is: 717,389.17
Step by Step Solution
- Step 1: Write the proportion equation
1,319,709.22 : 1,979,563.11 = 478,259.62 : x - Step 2: Convert to fraction form
1,319,709.22/1,979,563.11 = 478,259.62/x - Step 3: Cross multiply
1,319,709.22x = 1,979,563.11 × 478,259.62 - Step 4: Simplify right side
1,319,709.22x = 946,745,100,754.62 - Step 5: Solve for x
x = 946,745,100,754.62/1,319,709.22 - Step 6: Final answer
x = 717,389.17
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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.