Finding the Fourth Proportional to 853,569.36, 1,279,369.08 and 320,749.74
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Solution
The fourth proportional to 853,569.36, 1,279,369.08 and 320,749.74 is: 480,754.49
Step by Step Solution
- Step 1: Write the proportion equation
853,569.36 : 1,279,369.08 = 320,749.74 : x - Step 2: Convert to fraction form
853,569.36/1,279,369.08 = 320,749.74/x - Step 3: Cross multiply
853,569.36x = 1,279,369.08 × 320,749.74 - Step 4: Simplify right side
853,569.36x = 410,357,299,774.04 - Step 5: Solve for x
x = 410,357,299,774.04/853,569.36 - Step 6: Final answer
x = 480,754.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.