Finding the Fourth Proportional to 639,310.19, 882,362.33 and 381,203.75
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Solution
The fourth proportional to 639,310.19, 882,362.33 and 381,203.75 is: 526,129.32
Step by Step Solution
- Step 1: Write the proportion equation
639,310.19 : 882,362.33 = 381,203.75 : x - Step 2: Convert to fraction form
639,310.19/882,362.33 = 381,203.75/x - Step 3: Cross multiply
639,310.19x = 882,362.33 × 381,203.75 - Step 4: Simplify right side
639,310.19x = 336,359,830,784.14 - Step 5: Solve for x
x = 336,359,830,784.14/639,310.19 - Step 6: Final answer
x = 526,129.32
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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.