Finding the Fourth Proportional to 626,638.68, 864,519.14 and 354,644.19
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Solution
The fourth proportional to 626,638.68, 864,519.14 and 354,644.19 is: 489,271.89
Step by Step Solution
- Step 1: Write the proportion equation
626,638.68 : 864,519.14 = 354,644.19 : x - Step 2: Convert to fraction form
626,638.68/864,519.14 = 354,644.19/x - Step 3: Cross multiply
626,638.68x = 864,519.14 × 354,644.19 - Step 4: Simplify right side
626,638.68x = 306,596,691,031.41 - Step 5: Solve for x
x = 306,596,691,031.41/626,638.68 - Step 6: Final answer
x = 489,271.89
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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.