Finding the Fourth Proportional to 639,699.18, 882,767.86 and 353,213.11
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Solution
The fourth proportional to 639,699.18, 882,767.86 and 353,213.11 is: 487,424.70
Step by Step Solution
- Step 1: Write the proportion equation
639,699.18 : 882,767.86 = 353,213.11 : x - Step 2: Convert to fraction form
639,699.18/882,767.86 = 353,213.11/x - Step 3: Cross multiply
639,699.18x = 882,767.86 × 353,213.11 - Step 4: Simplify right side
639,699.18x = 311,805,181,238.65 - Step 5: Solve for x
x = 311,805,181,238.65/639,699.18 - Step 6: Final answer
x = 487,424.70
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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.