Finding the Fourth Proportional to 921,443.87, 1,271,598.85 and 513,571.99
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Solution
The fourth proportional to 921,443.87, 1,271,598.85 and 513,571.99 is: 708,732.86
Step by Step Solution
- Step 1: Write the proportion equation
921,443.87 : 1,271,598.85 = 513,571.99 : x - Step 2: Convert to fraction form
921,443.87/1,271,598.85 = 513,571.99/x - Step 3: Cross multiply
921,443.87x = 1,271,598.85 × 513,571.99 - Step 4: Simplify right side
921,443.87x = 653,057,551,876.21 - Step 5: Solve for x
x = 653,057,551,876.21/921,443.87 - Step 6: Final answer
x = 708,732.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.