Finding the Fourth Proportional to 660,745.63, 911,751.61 and 388,753.70
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Solution
The fourth proportional to 660,745.63, 911,751.61 and 388,753.70 is: 536,434.59
Step by Step Solution
- Step 1: Write the proportion equation
660,745.63 : 911,751.61 = 388,753.70 : x - Step 2: Convert to fraction form
660,745.63/911,751.61 = 388,753.70/x - Step 3: Cross multiply
660,745.63x = 911,751.61 × 388,753.70 - Step 4: Simplify right side
660,745.63x = 354,446,811,868.46 - Step 5: Solve for x
x = 354,446,811,868.46/660,745.63 - Step 6: Final answer
x = 536,434.59
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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.