Finding the Fourth Proportional to 660,534.41, 990,796.35 and 392,519.99
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Solution
The fourth proportional to 660,534.41, 990,796.35 and 392,519.99 is: 588,776.86
Step by Step Solution
- Step 1: Write the proportion equation
660,534.41 : 990,796.35 = 392,519.99 : x - Step 2: Convert to fraction form
660,534.41/990,796.35 = 392,519.99/x - Step 3: Cross multiply
660,534.41x = 990,796.35 × 392,519.99 - Step 4: Simplify right side
660,534.41x = 388,907,377,342.98 - Step 5: Solve for x
x = 388,907,377,342.98/660,534.41 - Step 6: Final answer
x = 588,776.86
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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.