Finding the Fourth Proportional to 661,528.99, 912,949.84 and 389,777.99
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Solution
The fourth proportional to 661,528.99, 912,949.84 and 389,777.99 is: 537,917.09
Step by Step Solution
- Step 1: Write the proportion equation
661,528.99 : 912,949.84 = 389,777.99 : x - Step 2: Convert to fraction form
661,528.99/912,949.84 = 389,777.99/x - Step 3: Cross multiply
661,528.99x = 912,949.84 × 389,777.99 - Step 4: Simplify right side
661,528.99x = 355,847,752,471.34 - Step 5: Solve for x
x = 355,847,752,471.34/661,528.99 - Step 6: Final answer
x = 537,917.09
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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.