Finding the Fourth Proportional to 1,438,718.34, 1,985,431.42 and 794,138.70
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Solution
The fourth proportional to 1,438,718.34, 1,985,431.42 and 794,138.70 is: 1,095,911.47
Step by Step Solution
- Step 1: Write the proportion equation
1,438,718.34 : 1,985,431.42 = 794,138.70 : x - Step 2: Convert to fraction form
1,438,718.34/1,985,431.42 = 794,138.70/x - Step 3: Cross multiply
1,438,718.34x = 1,985,431.42 × 794,138.70 - Step 4: Simplify right side
1,438,718.34x = 1,576,707,926,817.95 - Step 5: Solve for x
x = 1,576,707,926,817.95/1,438,718.34 - Step 6: Final answer
x = 1,095,911.47
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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.