Finding the Fourth Proportional to 19,778,197.20, 29,643,676.20 and 8,263,642.20
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Solution
The fourth proportional to 19,778,197.20, 29,643,676.20 and 8,263,642.20 is: 12,385,594.66
Step by Step Solution
- Step 1: Write the proportion equation
19,778,197.20 : 29,643,676.20 = 8,263,642.20 : x - Step 2: Convert to fraction form
19,778,197.20/29,643,676.20 = 8,263,642.20/x - Step 3: Cross multiply
19,778,197.20x = 29,643,676.20 × 8,263,642.20 - Step 4: Simplify right side
19,778,197.20x = 244,964,733,609,455.62 - Step 5: Solve for x
x = 244,964,733,609,455.62/19,778,197.20 - Step 6: Final answer
x = 12,385,594.66
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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.