Finding the Fourth Proportional to 9,319,675.64, 12,860,738.70 and 5,189,919.80
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Solution
The fourth proportional to 9,319,675.64, 12,860,738.70 and 5,189,919.80 is: 7,161,858.95
Step by Step Solution
- Step 1: Write the proportion equation
9,319,675.64 : 12,860,738.70 = 5,189,919.80 : x - Step 2: Convert to fraction form
9,319,675.64/12,860,738.70 = 5,189,919.80/x - Step 3: Cross multiply
9,319,675.64x = 12,860,738.70 × 5,189,919.80 - Step 4: Simplify right side
9,319,675.64x = 66,746,202,421,756.25 - Step 5: Solve for x
x = 66,746,202,421,756.25/9,319,675.64 - Step 6: Final answer
x = 7,161,858.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.