Finding the Fourth Proportional to 986,855.21, 1,361,784.17 and 557,177.75
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Solution
The fourth proportional to 986,855.21, 1,361,784.17 and 557,177.75 is: 768,862.37
Step by Step Solution
- Step 1: Write the proportion equation
986,855.21 : 1,361,784.17 = 557,177.75 : x - Step 2: Convert to fraction form
986,855.21/1,361,784.17 = 557,177.75/x - Step 3: Cross multiply
986,855.21x = 1,361,784.17 × 557,177.75 - Step 4: Simplify right side
986,855.21x = 758,755,834,410.24 - Step 5: Solve for x
x = 758,755,834,410.24/986,855.21 - Step 6: Final answer
x = 768,862.37
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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.