Finding the Fourth Proportional to 639,615.44, 882,670.64 and 353,136.08
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Solution
The fourth proportional to 639,615.44, 882,670.64 and 353,136.08 is: 487,328.53
Step by Step Solution
- Step 1: Write the proportion equation
639,615.44 : 882,670.64 = 353,136.08 : x - Step 2: Convert to fraction form
639,615.44/882,670.64 = 353,136.08/x - Step 3: Cross multiply
639,615.44x = 882,670.64 × 353,136.08 - Step 4: Simplify right side
639,615.44x = 311,702,849,740.69 - Step 5: Solve for x
x = 311,702,849,740.69/639,615.44 - Step 6: Final answer
x = 487,328.53
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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.