Finding the Fourth Proportional to 639,364.40, 882,260.06 and 352,865.99
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Solution
The fourth proportional to 639,364.40, 882,260.06 and 352,865.99 is: 486,920.39
Step by Step Solution
- Step 1: Write the proportion equation
639,364.40 : 882,260.06 = 352,865.99 : x - Step 2: Convert to fraction form
639,364.40/882,260.06 = 352,865.99/x - Step 3: Cross multiply
639,364.40x = 882,260.06 × 352,865.99 - Step 4: Simplify right side
639,364.40x = 311,319,563,333.73 - Step 5: Solve for x
x = 311,319,563,333.73/639,364.40 - Step 6: Final answer
x = 486,920.39
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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.