Finding the Fourth Proportional to 678,415.80, 1,017,771.30 and 205,088.80
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Solution
The fourth proportional to 678,415.80, 1,017,771.30 and 205,088.80 is: 307,677.82
Step by Step Solution
- Step 1: Write the proportion equation
678,415.80 : 1,017,771.30 = 205,088.80 : x - Step 2: Convert to fraction form
678,415.80/1,017,771.30 = 205,088.80/x - Step 3: Cross multiply
678,415.80x = 1,017,771.30 × 205,088.80 - Step 4: Simplify right side
678,415.80x = 208,733,494,591.44 - Step 5: Solve for x
x = 208,733,494,591.44/678,415.80 - Step 6: Final answer
x = 307,677.82
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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.