Finding the Fourth Proportional to 687,601.78, 1,031,613.84 and 328,231.23
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Solution
The fourth proportional to 687,601.78, 1,031,613.84 and 328,231.23 is: 492,447.65
Step by Step Solution
- Step 1: Write the proportion equation
687,601.78 : 1,031,613.84 = 328,231.23 : x - Step 2: Convert to fraction form
687,601.78/1,031,613.84 = 328,231.23/x - Step 3: Cross multiply
687,601.78x = 1,031,613.84 × 328,231.23 - Step 4: Simplify right side
687,601.78x = 338,607,879,588.22 - Step 5: Solve for x
x = 338,607,879,588.22/687,601.78 - Step 6: Final answer
x = 492,447.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.