Finding the Fourth Proportional to 7,128,301.80, 10,692,452.70 and 3,349,165.80
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Solution
The fourth proportional to 7,128,301.80, 10,692,452.70 and 3,349,165.80 is: 5,023,748.70
Step by Step Solution
- Step 1: Write the proportion equation
7,128,301.80 : 10,692,452.70 = 3,349,165.80 : x - Step 2: Convert to fraction form
7,128,301.80/10,692,452.70 = 3,349,165.80/x - Step 3: Cross multiply
7,128,301.80x = 10,692,452.70 × 3,349,165.80 - Step 4: Simplify right side
7,128,301.80x = 35,810,796,900,957.66 - Step 5: Solve for x
x = 35,810,796,900,957.66/7,128,301.80 - Step 6: Final answer
x = 5,023,748.70
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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.