Finding the Fourth Proportional to 2,639,868.90, 3,643,070.85 and 1,722,684.84
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Solution
The fourth proportional to 2,639,868.90, 3,643,070.85 and 1,722,684.84 is: 2,377,338.86
Step by Step Solution
- Step 1: Write the proportion equation
2,639,868.90 : 3,643,070.85 = 1,722,684.84 : x - Step 2: Convert to fraction form
2,639,868.90/3,643,070.85 = 1,722,684.84/x - Step 3: Cross multiply
2,639,868.90x = 3,643,070.85 × 1,722,684.84 - Step 4: Simplify right side
2,639,868.90x = 6,275,862,924,340.91 - Step 5: Solve for x
x = 6,275,862,924,340.91/2,639,868.90 - Step 6: Final answer
x = 2,377,338.86
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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.