Finding the Fourth Proportional to 639,101.21, 882,279.27 and 397,461.63
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Solution
The fourth proportional to 639,101.21, 882,279.27 and 397,461.63 is: 548,695.82
Step by Step Solution
- Step 1: Write the proportion equation
639,101.21 : 882,279.27 = 397,461.63 : x - Step 2: Convert to fraction form
639,101.21/882,279.27 = 397,461.63/x - Step 3: Cross multiply
639,101.21x = 882,279.27 × 397,461.63 - Step 4: Simplify right side
639,101.21x = 350,672,160,077.96 - Step 5: Solve for x
x = 350,672,160,077.96/639,101.21 - Step 6: Final answer
x = 548,695.82
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1.5x scale
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.