Finding the Fourth Proportional to 557,691.99, 769,613.05 and 316,020.63
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Solution
The fourth proportional to 557,691.99, 769,613.05 and 316,020.63 is: 436,107.39
Step by Step Solution
- Step 1: Write the proportion equation
557,691.99 : 769,613.05 = 316,020.63 : x - Step 2: Convert to fraction form
557,691.99/769,613.05 = 316,020.63/x - Step 3: Cross multiply
557,691.99x = 769,613.05 × 316,020.63 - Step 4: Simplify right side
557,691.99x = 243,213,600,917.22 - Step 5: Solve for x
x = 243,213,600,917.22/557,691.99 - Step 6: Final answer
x = 436,107.39
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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.