Finding the Fourth Proportional to 8,998,485.20, 13,497,727.80 and 8,305,643.60
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Solution
The fourth proportional to 8,998,485.20, 13,497,727.80 and 8,305,643.60 is: 12,458,465.40
Step by Step Solution
- Step 1: Write the proportion equation
8,998,485.20 : 13,497,727.80 = 8,305,643.60 : x - Step 2: Convert to fraction form
8,998,485.20/13,497,727.80 = 8,305,643.60/x - Step 3: Cross multiply
8,998,485.20x = 13,497,727.80 × 8,305,643.60 - Step 4: Simplify right side
8,998,485.20x = 112,107,316,516,612.08 - Step 5: Solve for x
x = 112,107,316,516,612.08/8,998,485.20 - Step 6: Final answer
x = 12,458,465.40
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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.