Finding the Fourth Proportional to 680,921.80, 1,021,382.70 and 415,201.30
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Solution
The fourth proportional to 680,921.80, 1,021,382.70 and 415,201.30 is: 622,801.95
Step by Step Solution
- Step 1: Write the proportion equation
680,921.80 : 1,021,382.70 = 415,201.30 : x - Step 2: Convert to fraction form
680,921.80/1,021,382.70 = 415,201.30/x - Step 3: Cross multiply
680,921.80x = 1,021,382.70 × 415,201.30 - Step 4: Simplify right side
680,921.80x = 424,079,424,837.51 - Step 5: Solve for x
x = 424,079,424,837.51/680,921.80 - Step 6: Final answer
x = 622,801.95
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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.