Finding the Fourth Proportional to 10,542,406.40, 15,813,609.60 and 2,564,230.40
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Solution
The fourth proportional to 10,542,406.40, 15,813,609.60 and 2,564,230.40 is: 3,846,345.60
Step by Step Solution
- Step 1: Write the proportion equation
10,542,406.40 : 15,813,609.60 = 2,564,230.40 : x - Step 2: Convert to fraction form
10,542,406.40/15,813,609.60 = 2,564,230.40/x - Step 3: Cross multiply
10,542,406.40x = 15,813,609.60 × 2,564,230.40 - Step 4: Simplify right side
10,542,406.40x = 40,549,738,470,051.84 - Step 5: Solve for x
x = 40,549,738,470,051.84/10,542,406.40 - Step 6: Final answer
x = 3,846,345.60
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Double scale
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Similar ratio
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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.