Finding the Fourth Proportional to 686,480.31, 1,028,557.93 and 415,790.53
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Solution
The fourth proportional to 686,480.31, 1,028,557.93 and 415,790.53 is: 622,981.66
Step by Step Solution
- Step 1: Write the proportion equation
686,480.31 : 1,028,557.93 = 415,790.53 : x - Step 2: Convert to fraction form
686,480.31/1,028,557.93 = 415,790.53/x - Step 3: Cross multiply
686,480.31x = 1,028,557.93 × 415,790.53 - Step 4: Simplify right side
686,480.31x = 427,664,643,239.53 - Step 5: Solve for x
x = 427,664,643,239.53/686,480.31 - Step 6: Final answer
x = 622,981.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.