Finding the Fourth Proportional to 7,139,661.40, 10,693,745.70 and 4,294,811.80
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Solution
The fourth proportional to 7,139,661.40, 10,693,745.70 and 4,294,811.80 is: 6,432,745.57
Step by Step Solution
- Step 1: Write the proportion equation
7,139,661.40 : 10,693,745.70 = 4,294,811.80 : x - Step 2: Convert to fraction form
7,139,661.40/10,693,745.70 = 4,294,811.80/x - Step 3: Cross multiply
7,139,661.40x = 10,693,745.70 × 4,294,811.80 - Step 4: Simplify right side
7,139,661.40x = 45,927,625,218,559.26 - Step 5: Solve for x
x = 45,927,625,218,559.26/7,139,661.40 - Step 6: Final answer
x = 6,432,745.57
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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.