Finding the Fourth Proportional to 3,171,159.21, 4,376,199.73 and 1,720,854.65
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Solution
The fourth proportional to 3,171,159.21, 4,376,199.73 and 1,720,854.65 is: 2,374,779.43
Step by Step Solution
- Step 1: Write the proportion equation
3,171,159.21 : 4,376,199.73 = 1,720,854.65 : x - Step 2: Convert to fraction form
3,171,159.21/4,376,199.73 = 1,720,854.65/x - Step 3: Cross multiply
3,171,159.21x = 4,376,199.73 × 1,720,854.65 - Step 4: Simplify right side
3,171,159.21x = 7,530,803,654,699.25 - Step 5: Solve for x
x = 7,530,803,654,699.25/3,171,159.21 - Step 6: Final answer
x = 2,374,779.43
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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.