Finding the Fourth Proportional to 991,426.23, 1,368,176.85 and 538,717.23
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Solution
The fourth proportional to 991,426.23, 1,368,176.85 and 538,717.23 is: 743,434.48
Step by Step Solution
- Step 1: Write the proportion equation
991,426.23 : 1,368,176.85 = 538,717.23 : x - Step 2: Convert to fraction form
991,426.23/1,368,176.85 = 538,717.23/x - Step 3: Cross multiply
991,426.23x = 1,368,176.85 × 538,717.23 - Step 4: Simplify right side
991,426.23x = 737,060,442,782.13 - Step 5: Solve for x
x = 737,060,442,782.13/991,426.23 - Step 6: Final answer
x = 743,434.48
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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.