Finding the Fourth Proportional to 3,172,359.36, 4,377,861.47 and 1,722,055.78
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Solution
The fourth proportional to 3,172,359.36, 4,377,861.47 and 1,722,055.78 is: 2,376,439.99
Step by Step Solution
- Step 1: Write the proportion equation
3,172,359.36 : 4,377,861.47 = 1,722,055.78 : x - Step 2: Convert to fraction form
3,172,359.36/4,377,861.47 = 1,722,055.78/x - Step 3: Cross multiply
3,172,359.36x = 4,377,861.47 × 1,722,055.78 - Step 4: Simplify right side
3,172,359.36x = 7,538,921,658,230.26 - Step 5: Solve for x
x = 7,538,921,658,230.26/3,172,359.36 - Step 6: Final answer
x = 2,376,439.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.