Finding the Fourth Proportional to 639,136.85, 882,008.19 and 352,656.99
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Solution
The fourth proportional to 639,136.85, 882,008.19 and 352,656.99 is: 486,666.28
Step by Step Solution
- Step 1: Write the proportion equation
639,136.85 : 882,008.19 = 352,656.99 : x - Step 2: Convert to fraction form
639,136.85/882,008.19 = 352,656.99/x - Step 3: Cross multiply
639,136.85x = 882,008.19 × 352,656.99 - Step 4: Simplify right side
639,136.85x = 311,046,353,440.75 - Step 5: Solve for x
x = 311,046,353,440.75/639,136.85 - Step 6: Final answer
x = 486,666.28
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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.