Finding the Fourth Proportional to 811,840.80, 1,218,106.80 and 512,551.20
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Solution
The fourth proportional to 811,840.80, 1,218,106.80 and 512,551.20 is: 769,044.99
Step by Step Solution
- Step 1: Write the proportion equation
811,840.80 : 1,218,106.80 = 512,551.20 : x - Step 2: Convert to fraction form
811,840.80/1,218,106.80 = 512,551.20/x - Step 3: Cross multiply
811,840.80x = 1,218,106.80 × 512,551.20 - Step 4: Simplify right side
811,840.80x = 624,342,102,068.16 - Step 5: Solve for x
x = 624,342,102,068.16/811,840.80 - Step 6: Final answer
x = 769,044.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.