Finding the Third Proportional to 405,688.50 and 630,645.75
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Solution
The third proportional to 405,688.50 and 630,645.75 is: 980,343.45
Step by Step Solution
- Step 1: Write the proportion equation
405,688.50 : 630,645.75 = 630,645.75 : x - Step 2: Convert to fraction form
405,688.50/630,645.75 = 630,645.75/x - Step 3: Cross multiply
405,688.50x = 630,645.75 × 630,645.75 - Step 4: Simplify right side
405,688.50x = 397,714,061,993.06 - Step 5: Solve for x
x = 397,714,061,993.06/405,688.50 - Step 6: Final answer
x = 980,343.45
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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.