Finding the Fourth Proportional to 1,579,910.40, 2,368,310.40 and 781,315.20
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Solution
The fourth proportional to 1,579,910.40, 2,368,310.40 and 781,315.20 is: 1,171,203.70
Step by Step Solution
- Step 1: Write the proportion equation
1,579,910.40 : 2,368,310.40 = 781,315.20 : x - Step 2: Convert to fraction form
1,579,910.40/2,368,310.40 = 781,315.20/x - Step 3: Cross multiply
1,579,910.40x = 2,368,310.40 × 781,315.20 - Step 4: Simplify right side
1,579,910.40x = 1,850,396,913,838.08 - Step 5: Solve for x
x = 1,850,396,913,838.08/1,579,910.40 - Step 6: Final answer
x = 1,171,203.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.