Finding the Fourth Proportional to 7,172,393.40, 10,751,591.70 and 6,416,566.20
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Solution
The fourth proportional to 7,172,393.40, 10,751,591.70 and 6,416,566.20 is: 9,618,588.39
Step by Step Solution
- Step 1: Write the proportion equation
7,172,393.40 : 10,751,591.70 = 6,416,566.20 : x - Step 2: Convert to fraction form
7,172,393.40/10,751,591.70 = 6,416,566.20/x - Step 3: Cross multiply
7,172,393.40x = 10,751,591.70 × 6,416,566.20 - Step 4: Simplify right side
7,172,393.40x = 68,988,299,898,420.54 - Step 5: Solve for x
x = 68,988,299,898,420.54/7,172,393.40 - Step 6: Final answer
x = 9,618,588.39
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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.