Finding the Fourth Proportional to 687,679.68, 1,031,514.84 and 374,129.44
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Solution
The fourth proportional to 687,679.68, 1,031,514.84 and 374,129.44 is: 561,191.61
Step by Step Solution
- Step 1: Write the proportion equation
687,679.68 : 1,031,514.84 = 374,129.44 : x - Step 2: Convert to fraction form
687,679.68/1,031,514.84 = 374,129.44/x - Step 3: Cross multiply
687,679.68x = 1,031,514.84 × 374,129.44 - Step 4: Simplify right side
687,679.68x = 385,920,069,440.89 - Step 5: Solve for x
x = 385,920,069,440.89/687,679.68 - Step 6: Final answer
x = 561,191.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.