Finding the Fourth Proportional to 2,137,643.45, 2,949,968.75 and 1,278,203.71
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Solution
The fourth proportional to 2,137,643.45, 2,949,968.75 and 1,278,203.71 is: 1,763,933.55
Step by Step Solution
- Step 1: Write the proportion equation
2,137,643.45 : 2,949,968.75 = 1,278,203.71 : x - Step 2: Convert to fraction form
2,137,643.45/2,949,968.75 = 1,278,203.71/x - Step 3: Cross multiply
2,137,643.45x = 2,949,968.75 × 1,278,203.71 - Step 4: Simplify right side
2,137,643.45x = 3,770,660,996,454.65 - Step 5: Solve for x
x = 3,770,660,996,454.65/2,137,643.45 - Step 6: Final answer
x = 1,763,933.55
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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.