Finding the Fourth Proportional to 660,543.41, 990,809.82 and 392,528.99
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Solution
The fourth proportional to 660,543.41, 990,809.82 and 392,528.99 is: 588,790.34
Step by Step Solution
- Step 1: Write the proportion equation
660,543.41 : 990,809.82 = 392,528.99 : x - Step 2: Convert to fraction form
660,543.41/990,809.82 = 392,528.99/x - Step 3: Cross multiply
660,543.41x = 990,809.82 × 392,528.99 - Step 4: Simplify right side
660,543.41x = 388,921,580,403.71 - Step 5: Solve for x
x = 388,921,580,403.71/660,543.41 - Step 6: Final answer
x = 588,790.34
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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.