Finding the Fourth Proportional to 3,171,869.12, 4,377,184.20 and 1,721,565.09
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Solution
The fourth proportional to 3,171,869.12, 4,377,184.20 and 1,721,565.09 is: 2,375,762.44
Step by Step Solution
- Step 1: Write the proportion equation
3,171,869.12 : 4,377,184.20 = 1,721,565.09 : x - Step 2: Convert to fraction form
3,171,869.12/4,377,184.20 = 1,721,565.09/x - Step 3: Cross multiply
3,171,869.12x = 4,377,184.20 × 1,721,565.09 - Step 4: Simplify right side
3,171,869.12x = 7,535,607,511,219.58 - Step 5: Solve for x
x = 7,535,607,511,219.58/3,171,869.12 - Step 6: Final answer
x = 2,375,762.44
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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.