Finding the Fourth Proportional to 992,807.70, 1,489,211.55 and 393,911.70
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Solution
The fourth proportional to 992,807.70, 1,489,211.55 and 393,911.70 is: 590,867.55
Step by Step Solution
- Step 1: Write the proportion equation
992,807.70 : 1,489,211.55 = 393,911.70 : x - Step 2: Convert to fraction form
992,807.70/1,489,211.55 = 393,911.70/x - Step 3: Cross multiply
992,807.70x = 1,489,211.55 × 393,911.70 - Step 4: Simplify right side
992,807.70x = 586,617,853,320.14 - Step 5: Solve for x
x = 586,617,853,320.14/992,807.70 - Step 6: Final answer
x = 590,867.55
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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.