Finding the Fourth Proportional to 13,490,613.40, 20,228,921.70 and 4,966,562.20
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Solution
The fourth proportional to 13,490,613.40, 20,228,921.70 and 4,966,562.20 is: 7,447,266.84
Step by Step Solution
- Step 1: Write the proportion equation
13,490,613.40 : 20,228,921.70 = 4,966,562.20 : x - Step 2: Convert to fraction form
13,490,613.40/20,228,921.70 = 4,966,562.20/x - Step 3: Cross multiply
13,490,613.40x = 20,228,921.70 × 4,966,562.20 - Step 4: Simplify right side
13,490,613.40x = 100,468,197,861,979.73 - Step 5: Solve for x
x = 100,468,197,861,979.73/13,490,613.40 - Step 6: Final answer
x = 7,447,266.84
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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.