Finding the Fourth Proportional to 612,083.70, 918,125.55 and 493,985.70
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Solution
The fourth proportional to 612,083.70, 918,125.55 and 493,985.70 is: 740,978.55
Step by Step Solution
- Step 1: Write the proportion equation
612,083.70 : 918,125.55 = 493,985.70 : x - Step 2: Convert to fraction form
612,083.70/918,125.55 = 493,985.70/x - Step 3: Cross multiply
612,083.70x = 918,125.55 × 493,985.70 - Step 4: Simplify right side
612,083.70x = 453,540,892,504.64 - Step 5: Solve for x
x = 453,540,892,504.64/612,083.70 - Step 6: Final answer
x = 740,978.55
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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.