Finding the Fourth Proportional to 986,790.24, 1,361,760.84 and 557,061.12
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Solution
The fourth proportional to 986,790.24, 1,361,760.84 and 557,061.12 is: 768,738.87
Step by Step Solution
- Step 1: Write the proportion equation
986,790.24 : 1,361,760.84 = 557,061.12 : x - Step 2: Convert to fraction form
986,790.24/1,361,760.84 = 557,061.12/x - Step 3: Cross multiply
986,790.24x = 1,361,760.84 × 557,061.12 - Step 4: Simplify right side
986,790.24x = 758,584,018,702.54 - Step 5: Solve for x
x = 758,584,018,702.54/986,790.24 - Step 6: Final answer
x = 768,738.87
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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.