Finding the Fourth Proportional to 678,420.80, 1,017,778.80 and 205,093.80
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Solution
The fourth proportional to 678,420.80, 1,017,778.80 and 205,093.80 is: 307,685.32
Step by Step Solution
- Step 1: Write the proportion equation
678,420.80 : 1,017,778.80 = 205,093.80 : x - Step 2: Convert to fraction form
678,420.80/1,017,778.80 = 205,093.80/x - Step 3: Cross multiply
678,420.80x = 1,017,778.80 × 205,093.80 - Step 4: Simplify right side
678,420.80x = 208,740,121,651.44 - Step 5: Solve for x
x = 208,740,121,651.44/678,420.80 - Step 6: Final answer
x = 307,685.32
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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.