Finding the Fourth Proportional to 660,279.24, 911,189.07 and 388,358.55
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Solution
The fourth proportional to 660,279.24, 911,189.07 and 388,358.55 is: 535,936.99
Step by Step Solution
- Step 1: Write the proportion equation
660,279.24 : 911,189.07 = 388,358.55 : x - Step 2: Convert to fraction form
660,279.24/911,189.07 = 388,358.55/x - Step 3: Cross multiply
660,279.24x = 911,189.07 × 388,358.55 - Step 4: Simplify right side
660,279.24x = 353,868,066,001.05 - Step 5: Solve for x
x = 353,868,066,001.05/660,279.24 - Step 6: Final answer
x = 535,936.99
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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.