Finding the Fourth Proportional to 10,202,314.68, 15,286,675.50 and 7,128,617.40
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Solution
The fourth proportional to 10,202,314.68, 15,286,675.50 and 7,128,617.40 is: 10,681,189.94
Step by Step Solution
- Step 1: Write the proportion equation
10,202,314.68 : 15,286,675.50 = 7,128,617.40 : x - Step 2: Convert to fraction form
10,202,314.68/15,286,675.50 = 7,128,617.40/x - Step 3: Cross multiply
10,202,314.68x = 15,286,675.50 × 7,128,617.40 - Step 4: Simplify right side
10,202,314.68x = 108,972,860,957,453.70 - Step 5: Solve for x
x = 108,972,860,957,453.70/10,202,314.68 - Step 6: Final answer
x = 10,681,189.94
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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.