Finding the Fourth Proportional to 1,286,278.97, 1,929,434.74 and 487,345.91
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Solution
The fourth proportional to 1,286,278.97, 1,929,434.74 and 487,345.91 is: 731,025.03
Step by Step Solution
- Step 1: Write the proportion equation
1,286,278.97 : 1,929,434.74 = 487,345.91 : x - Step 2: Convert to fraction form
1,286,278.97/1,929,434.74 = 487,345.91/x - Step 3: Cross multiply
1,286,278.97x = 1,929,434.74 × 487,345.91 - Step 4: Simplify right side
1,286,278.97x = 940,302,118,285.38 - Step 5: Solve for x
x = 940,302,118,285.38/1,286,278.97 - Step 6: Final answer
x = 731,025.03
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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.