Finding the Fourth Proportional to 811,203.12, 1,215,946.62 and 305,545.31
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Solution
The fourth proportional to 811,203.12, 1,215,946.62 and 305,545.31 is: 457,994.76
Step by Step Solution
- Step 1: Write the proportion equation
811,203.12 : 1,215,946.62 = 305,545.31 : x - Step 2: Convert to fraction form
811,203.12/1,215,946.62 = 305,545.31/x - Step 3: Cross multiply
811,203.12x = 1,215,946.62 × 305,545.31 - Step 4: Simplify right side
811,203.12x = 371,526,780,871.62 - Step 5: Solve for x
x = 371,526,780,871.62/811,203.12 - Step 6: Final answer
x = 457,994.76
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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.