Finding the Fourth Proportional to 8,688,751.20, 13,033,126.80 and 8,128,879.20
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Solution
The fourth proportional to 8,688,751.20, 13,033,126.80 and 8,128,879.20 is: 12,193,318.80
Step by Step Solution
- Step 1: Write the proportion equation
8,688,751.20 : 13,033,126.80 = 8,128,879.20 : x - Step 2: Convert to fraction form
8,688,751.20/13,033,126.80 = 8,128,879.20/x - Step 3: Cross multiply
8,688,751.20x = 13,033,126.80 × 8,128,879.20 - Step 4: Simplify right side
8,688,751.20x = 105,944,713,355,482.56 - Step 5: Solve for x
x = 105,944,713,355,482.56/8,688,751.20 - Step 6: Final answer
x = 12,193,318.80
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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.