Finding the Fourth Proportional to 660,412.20, 990,618.30 and 344,795.70
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Solution
The fourth proportional to 660,412.20, 990,618.30 and 344,795.70 is: 517,193.55
Step by Step Solution
- Step 1: Write the proportion equation
660,412.20 : 990,618.30 = 344,795.70 : x - Step 2: Convert to fraction form
660,412.20/990,618.30 = 344,795.70/x - Step 3: Cross multiply
660,412.20x = 990,618.30 × 344,795.70 - Step 4: Simplify right side
660,412.20x = 341,560,930,181.31 - Step 5: Solve for x
x = 341,560,930,181.31/660,412.20 - Step 6: Final answer
x = 517,193.55
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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.