Finding the Fourth Proportional to 43,491,331.30, 65,236,996.95 and 13,199,145.70
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Solution
The fourth proportional to 43,491,331.30, 65,236,996.95 and 13,199,145.70 is: 19,798,718.55
Step by Step Solution
- Step 1: Write the proportion equation
43,491,331.30 : 65,236,996.95 = 13,199,145.70 : x - Step 2: Convert to fraction form
43,491,331.30/65,236,996.95 = 13,199,145.70/x - Step 3: Cross multiply
43,491,331.30x = 65,236,996.95 × 13,199,145.70 - Step 4: Simplify right side
43,491,331.30x = 861,072,627,773,505.62 - Step 5: Solve for x
x = 861,072,627,773,505.62/43,491,331.30 - Step 6: Final answer
x = 19,798,718.55
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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.