Finding the Fourth Proportional to 485,573.11, 670,220.12 and 286,836.42
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Solution
The fourth proportional to 485,573.11, 670,220.12 and 286,836.42 is: 395,910.61
Step by Step Solution
- Step 1: Write the proportion equation
485,573.11 : 670,220.12 = 286,836.42 : x - Step 2: Convert to fraction form
485,573.11/670,220.12 = 286,836.42/x - Step 3: Cross multiply
485,573.11x = 670,220.12 × 286,836.42 - Step 4: Simplify right side
485,573.11x = 192,243,543,297.21 - Step 5: Solve for x
x = 192,243,543,297.21/485,573.11 - Step 6: Final answer
x = 395,910.61
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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.