Finding the Fourth Proportional to 639,117.83, 882,302.18 and 397,478.26
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Solution
The fourth proportional to 639,117.83, 882,302.18 and 397,478.26 is: 548,718.75
Step by Step Solution
- Step 1: Write the proportion equation
639,117.83 : 882,302.18 = 397,478.26 : x - Step 2: Convert to fraction form
639,117.83/882,302.18 = 397,478.26/x - Step 3: Cross multiply
639,117.83x = 882,302.18 × 397,478.26 - Step 4: Simplify right side
639,117.83x = 350,695,935,300.61 - Step 5: Solve for x
x = 350,695,935,300.61/639,117.83 - Step 6: Final answer
x = 548,718.75
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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.