Finding the Fourth Proportional to 858,420.22, 1,285,125.37 and 643,232.75
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Solution
The fourth proportional to 858,420.22, 1,285,125.37 and 643,232.75 is: 962,972.10
Step by Step Solution
- Step 1: Write the proportion equation
858,420.22 : 1,285,125.37 = 643,232.75 : x - Step 2: Convert to fraction form
858,420.22/1,285,125.37 = 643,232.75/x - Step 3: Cross multiply
858,420.22x = 1,285,125.37 × 643,232.75 - Step 4: Simplify right side
858,420.22x = 826,634,725,712.44 - Step 5: Solve for x
x = 826,634,725,712.44/858,420.22 - Step 6: Final answer
x = 962,972.10
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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.