Finding the Fourth Proportional to 639,215.40, 882,119.84 and 352,743.76
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Solution
The fourth proportional to 639,215.40, 882,119.84 and 352,743.76 is: 486,787.82
Step by Step Solution
- Step 1: Write the proportion equation
639,215.40 : 882,119.84 = 352,743.76 : x - Step 2: Convert to fraction form
639,215.40/882,119.84 = 352,743.76/x - Step 3: Cross multiply
639,215.40x = 882,119.84 × 352,743.76 - Step 4: Simplify right side
639,215.40x = 311,162,269,132.20 - Step 5: Solve for x
x = 311,162,269,132.20/639,215.40 - Step 6: Final answer
x = 486,787.82
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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.