Finding the Fourth Proportional to 686,166.80, 1,029,252.68 and 485,881.36
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Solution
The fourth proportional to 686,166.80, 1,029,252.68 and 485,881.36 is: 728,823.80
Step by Step Solution
- Step 1: Write the proportion equation
686,166.80 : 1,029,252.68 = 485,881.36 : x - Step 2: Convert to fraction form
686,166.80/1,029,252.68 = 485,881.36/x - Step 3: Cross multiply
686,166.80x = 1,029,252.68 × 485,881.36 - Step 4: Simplify right side
686,166.80x = 500,094,691,942.05 - Step 5: Solve for x
x = 500,094,691,942.05/686,166.80 - Step 6: Final answer
x = 728,823.80
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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.