Finding the Fourth Proportional to 639,608.11, 882,656.73 and 353,126.09
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Solution
The fourth proportional to 639,608.11, 882,656.73 and 353,126.09 is: 487,312.65
Step by Step Solution
- Step 1: Write the proportion equation
639,608.11 : 882,656.73 = 353,126.09 : x - Step 2: Convert to fraction form
639,608.11/882,656.73 = 353,126.09/x - Step 3: Cross multiply
639,608.11x = 882,656.73 × 353,126.09 - Step 4: Simplify right side
639,608.11x = 311,689,119,877.09 - Step 5: Solve for x
x = 311,689,119,877.09/639,608.11 - Step 6: Final answer
x = 487,312.65
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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.