Finding the Fourth Proportional to 790,707.42, 1,091,178.36 and 428,135.76
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Solution
The fourth proportional to 790,707.42, 1,091,178.36 and 428,135.76 is: 590,828.50
Step by Step Solution
- Step 1: Write the proportion equation
790,707.42 : 1,091,178.36 = 428,135.76 : x - Step 2: Convert to fraction form
790,707.42/1,091,178.36 = 428,135.76/x - Step 3: Cross multiply
790,707.42x = 1,091,178.36 × 428,135.76 - Step 4: Simplify right side
790,707.42x = 467,172,476,454.15 - Step 5: Solve for x
x = 467,172,476,454.15/790,707.42 - Step 6: Final answer
x = 590,828.50
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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.