Finding the Third Proportional to 390,561.75 and 812,220.75
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Solution
The third proportional to 390,561.75 and 812,220.75 is: 1,689,112.02
Step by Step Solution
- Step 1: Write the proportion equation
390,561.75 : 812,220.75 = 812,220.75 : x - Step 2: Convert to fraction form
390,561.75/812,220.75 = 812,220.75/x - Step 3: Cross multiply
390,561.75x = 812,220.75 × 812,220.75 - Step 4: Simplify right side
390,561.75x = 659,702,546,730.56 - Step 5: Solve for x
x = 659,702,546,730.56/390,561.75 - Step 6: Final answer
x = 1,689,112.02
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Why These Related Problems?
These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.