Finding the Fourth Proportional to 2,151,293.19, 2,968,730.86 and 1,221,174.62
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Solution
The fourth proportional to 2,151,293.19, 2,968,730.86 and 1,221,174.62 is: 1,685,190.47
Step by Step Solution
- Step 1: Write the proportion equation
2,151,293.19 : 2,968,730.86 = 1,221,174.62 : x - Step 2: Convert to fraction form
2,151,293.19/2,968,730.86 = 1,221,174.62/x - Step 3: Cross multiply
2,151,293.19x = 2,968,730.86 × 1,221,174.62 - Step 4: Simplify right side
2,151,293.19x = 3,625,338,773,736.90 - Step 5: Solve for x
x = 3,625,338,773,736.90/2,151,293.19 - Step 6: Final answer
x = 1,685,190.47
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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.