Finding the Fourth Proportional to 490,786.84, 677,276.04 and 272,990.80
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Solution
The fourth proportional to 490,786.84, 677,276.04 and 272,990.80 is: 376,721.85
Step by Step Solution
- Step 1: Write the proportion equation
490,786.84 : 677,276.04 = 272,990.80 : x - Step 2: Convert to fraction form
490,786.84/677,276.04 = 272,990.80/x - Step 3: Cross multiply
490,786.84x = 677,276.04 × 272,990.80 - Step 4: Simplify right side
490,786.84x = 184,890,127,980.43 - Step 5: Solve for x
x = 184,890,127,980.43/490,786.84 - Step 6: Final answer
x = 376,721.85
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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.