Finding the Fourth Proportional to 639,467.76, 882,728.28 and 436,189.68
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Solution
The fourth proportional to 639,467.76, 882,728.28 and 436,189.68 is: 602,121.00
Step by Step Solution
- Step 1: Write the proportion equation
639,467.76 : 882,728.28 = 436,189.68 : x - Step 2: Convert to fraction form
639,467.76/882,728.28 = 436,189.68/x - Step 3: Cross multiply
639,467.76x = 882,728.28 × 436,189.68 - Step 4: Simplify right side
639,467.76x = 385,036,965,980.15 - Step 5: Solve for x
x = 385,036,965,980.15/639,467.76 - Step 6: Final answer
x = 602,121.00
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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.