Finding the Fourth Proportional to 420,299.79, 626,748.05 and 416,508.99
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Solution
The fourth proportional to 420,299.79, 626,748.05 and 416,508.99 is: 621,095.23
Step by Step Solution
- Step 1: Write the proportion equation
420,299.79 : 626,748.05 = 416,508.99 : x - Step 2: Convert to fraction form
420,299.79/626,748.05 = 416,508.99/x - Step 3: Cross multiply
420,299.79x = 626,748.05 × 416,508.99 - Step 4: Simplify right side
420,299.79x = 261,046,195,207.43 - Step 5: Solve for x
x = 261,046,195,207.43/420,299.79 - Step 6: Final answer
x = 621,095.23
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.