Finding the Fourth Proportional to 687,630.92, 1,031,453.46 and 207,862.65
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Solution
The fourth proportional to 687,630.92, 1,031,453.46 and 207,862.65 is: 311,796.12
Step by Step Solution
- Step 1: Write the proportion equation
687,630.92 : 1,031,453.46 = 207,862.65 : x - Step 2: Convert to fraction form
687,630.92/1,031,453.46 = 207,862.65/x - Step 3: Cross multiply
687,630.92x = 1,031,453.46 × 207,862.65 - Step 4: Simplify right side
687,630.92x = 214,400,649,547.27 - Step 5: Solve for x
x = 214,400,649,547.27/687,630.92 - Step 6: Final answer
x = 311,796.12
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1.5x scale
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.