Finding the Fourth Proportional to 1,386,037.12, 2,079,230.64 and 487,267.60
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Solution
The fourth proportional to 1,386,037.12, 2,079,230.64 and 487,267.60 is: 730,962.91
Step by Step Solution
- Step 1: Write the proportion equation
1,386,037.12 : 2,079,230.64 = 487,267.60 : x - Step 2: Convert to fraction form
1,386,037.12/2,079,230.64 = 487,267.60/x - Step 3: Cross multiply
1,386,037.12x = 2,079,230.64 × 487,267.60 - Step 4: Simplify right side
1,386,037.12x = 1,013,141,723,799.26 - Step 5: Solve for x
x = 1,013,141,723,799.26/1,386,037.12 - Step 6: Final answer
x = 730,962.91
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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.