Finding the Fourth Proportional to 919,678.20, 1,269,266.42 and 557,091.42
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Solution
The fourth proportional to 919,678.20, 1,269,266.42 and 557,091.42 is: 768,853.09
Step by Step Solution
- Step 1: Write the proportion equation
919,678.20 : 1,269,266.42 = 557,091.42 : x - Step 2: Convert to fraction form
919,678.20/1,269,266.42 = 557,091.42/x - Step 3: Cross multiply
919,678.20x = 1,269,266.42 × 557,091.42 - Step 4: Simplify right side
919,678.20x = 707,097,429,490.66 - Step 5: Solve for x
x = 707,097,429,490.66/919,678.20 - Step 6: Final answer
x = 768,853.09
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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.