Finding the Third Proportional to 386,921.81 and 434,899.13
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Solution
The third proportional to 386,921.81 and 434,899.13 is: 488,825.50
Step by Step Solution
- Step 1: Write the proportion equation
386,921.81 : 434,899.13 = 434,899.13 : x - Step 2: Convert to fraction form
386,921.81/434,899.13 = 434,899.13/x - Step 3: Cross multiply
386,921.81x = 434,899.13 × 434,899.13 - Step 4: Simplify right side
386,921.81x = 189,137,248,925.77 - Step 5: Solve for x
x = 189,137,248,925.77/386,921.81 - Step 6: Final answer
x = 488,825.50
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These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.