Finding the Fourth Proportional to 3,171,990.68, 4,377,351.54 and 1,721,686.42
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Solution
The fourth proportional to 3,171,990.68, 4,377,351.54 and 1,721,686.42 is: 2,375,929.65
Step by Step Solution
- Step 1: Write the proportion equation
3,171,990.68 : 4,377,351.54 = 1,721,686.42 : x - Step 2: Convert to fraction form
3,171,990.68/4,377,351.54 = 1,721,686.42/x - Step 3: Cross multiply
3,171,990.68x = 4,377,351.54 × 1,721,686.42 - Step 4: Simplify right side
3,171,990.68x = 7,536,426,701,984.09 - Step 5: Solve for x
x = 7,536,426,701,984.09/3,171,990.68 - Step 6: Final answer
x = 2,375,929.65
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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.