Finding the Fourth Proportional to 7,137,911.20, 10,710,495.60 and 4,743,421.60
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Solution
The fourth proportional to 7,137,911.20, 10,710,495.60 and 4,743,421.60 is: 7,117,543.88
Step by Step Solution
- Step 1: Write the proportion equation
7,137,911.20 : 10,710,495.60 = 4,743,421.60 : x - Step 2: Convert to fraction form
7,137,911.20/10,710,495.60 = 4,743,421.60/x - Step 3: Cross multiply
7,137,911.20x = 10,710,495.60 × 4,743,421.60 - Step 4: Simplify right side
7,137,911.20x = 50,804,396,175,744.95 - Step 5: Solve for x
x = 50,804,396,175,744.95/7,137,911.20 - Step 6: Final answer
x = 7,117,543.88
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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.